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The image shows the bottom of the firearm’s stock, specifically the buttplate, which is made of metal (likely brass or iron, given the patina and wear) and secured with screws. The buttplate is not magnetic, indicating it is likely made of a non-ferrous metal, such as brass, bronze, or a non-magnetic alloy. The
non-magnetic buttplate supports an American origin, as brass buttplates were often used by U.S. manufacturers like Sharps or Remington for Indian Contract firearms, balancing durability and cost.
The buttplate features a hinged access panel, which as noted is empty—there’s nothing behind it. The wooden stock shows wear, scratches, and discoloration, consistent with the historical age and use of a mid-18th to mid-19th-century percussion-era firearm. The metal buttplate matches the wear and patina seen on other metal components, reinforcing the firearm’s age and historical context. The hinged panel, though empty, suggests a design feature intended for storage or access, but its current emptiness indicates any original contents (e.g., tools, patches, or cleaning rods) are missing or were never present.

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The image shows a close-up view of the inside of the buttplate access panel (the hinged or removable panel on the buttplate), with the following key features:
Buttplate Access Panel:
- The panel is made of metal (likely iron or steel, based on the dark, rusty patina and wear matching other components), with a circular or rounded shape and a hinge or latch mechanism visible on the left side. The panel shows significant wear, corrosion, and patina, consistent with the firearm’s mid-19th-century age and use.
The wood of the buttstock is visible behind the panel, showing wear, discoloration, and a hollow or recessed area, indicating the storage compartment for percussion caps, tools, or cleaning supplies, as previously identified.
Mark on the Inside of the Panel:
- There is a stamped or engraved mark on the inner surface of the buttplate access panel, near the center or slightly offset. The mark appears to be a symbol or letters, but it’s partially obscured by wear, corrosion, and patina, making it challenging to interpret definitively.

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Mark analysis: The blue color enhancement significantly improves visibility of the mark, making “RF1” and “155” more discernible than in the original image. By selecting the deepest parts of the marks and replacing them with blue, we've highlighted the stamped/engraved lines against the corroded background, clarifying the structure of the characters. This helps narrow down the interpretation, though some ambiguity remains due to wear and corrosion.
Possible Meanings of “RF1 155”:
- Inspector’s Mark: “RF” could be an inspector’s initials (e.g., “R. Foster” or “R. Franklin”), with “1” indicating a specific inspector or batch, and “155” as a serial or inspection number. This aligns with mid-19th-century U.S. government practices for Indian Contract firearms, where inspectors like those at Springfield Armory or Harpers Ferry used initials and numbers.
- Manufacturer’s Code: “RF” might stand for a manufacturer or contractor (e.g., “Rifle Factory,” “Remington Firearms,” or a lesser-known maker like “Richards & Fox”), with “1” as a model or prototype number, and “155” as a serial or batch identifier. This fits the American origin hypothesis (Sharps, Maynard, or similar).
- Proof or Quality Mark: “RF” could indicate “Rifled” or “Tested,” with “1” as a quality rating and “155” as a batch or year code (e.g., 1855 or related to 1852).
- Serial/Batch Number: “RF1-155” might be a complete identifier, such as “Rifle Prototype 1, Serial 155,” consistent with the “691,” “No. 109,” and “70” marks elsewhere on the firearm.
- Consistency with Other Markings: The mark aligns with the “1852,” “INDIAN C.,” “ICS,” “691,” “No. 109,” “PATENT,” “APPLIED FOR,” “W” or “M,” “70” with “Q,” “+,” and circular stamp markings, suggesting a U.S. government or contractor inspection/marking system for the 1852 Indian Contract. The non-magnetic buttplate, frame, and side plate (brass or bronze) and magnetic barrel (iron/steel) further support an American mid-19th-century design, likely by Sharps, Maynard, or a related maker.

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The image shows the interior surface of the buttplate, specifically the area surrounding the access panel or trapdoor mechanism.
- The access panel, previously identified as a hinged or removable section, is not fully visible in this image but is implied by the surrounding structure. The panel’s hinge or pivot (likely on the right side, as seen in prior images) and screw holes are partially visible, matching the disassembled buttplate components (e.g., larger piece with circular hole, smaller cover/latch, locking piece).

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There are additional marks on the inside of the buttplate.

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The image shows the end of the wooden buttstock, where it meets the metal buttplate. The wood is dark, likely walnut or a similar hardwood, showing significant wear, scratches, discoloration, and patina, consistent with a mid-18th to mid-19th-century percussion-era firearm. The top-most area nearest the buttplate appears to have been replaced or there was something mounted at some point. The buttplate’s edge shows wear and corrosion, matching the aging seen on other metal components. There is a potential mark on the top of the buttplate suggests there may be an inscription, stamp, or engraving not fully visible in this image or previous ones, such as a maker’s mark, proof mark, or patent identifier. The wood has a curved or shaped profile where it meets the buttplate, typical of rifle or musket designs from the period, and there are no visible markings on the wood in this view.

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The image shows a close-up view of the top of the buttplate, where it meets the wooden buttstock. The buttplate is metal (likely brass or bronze, as it’s non-magnetic, per inspection updates), with a golden patina, wear, corrosion, and patina consistent with mid-19th-century use.
Although we thought it could possibly include a "7" but the “1” in “RF1” and the first “1” in “104” are narrow and uniform, suggesting no “7” is present but this image confirms “104” as the most accurate reading.
The mark is stamped or engraved into the metal, located centrally on the top surface of the buttplate, near the junction with the buttstock. The metal shows rust, pitting, and patina. The mark appears to read “RF1” followed by “104,” with:
- “RF1” on the left, matching the format of the “RF1” from the buttplate access panel mark:
- “R” as a curved or angular uppercase letter.
- “F” as a vertical letter with a horizontal crossbar.
- “1” as a numeral, possibly upright or slightly slanted.
- “104” on the right, with:
- “1” as the first numeral, potentially wider or narrower based on wear or stamping depth, making it ambiguous.
- “0” as a clear, circular numeral.
- “4” as a numeral with a closed loop or open top, clear and distinct.

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Interpretation of “RF1 104”:
“RF1”:
- This matches the “RF1” from the buttplate access panel mark (“RF1 155”), suggesting consistency in identification. It likely represents:
- An inspector’s initials (e.g., “R.F.” for Robert Foster, Richard Franklin) followed by a batch or prototype number (“1”).
- A manufacturer’s code (e.g., “RF” for “Rifle Factory,” “Remington Firearms,” or “Richards & Fox”) with a model or sequence number (“1”).
- A proof or quality mark (e.g., “RF” for “Rifled” or “Tested,” with “1” indicating a specific test or batch).
The consistency with “RF1 155” on the access panel indicates a unified marking system, likely by the same American manufacturer or inspector under the 1852 Indian Contract.
“104”:
- This represents a serial number, batch number, or inspection code, fitting the pattern of other numeric markings (e.g., “691,” “No. 109,” “70”). It could indicate:
- Serial number 104 in a production run or batch under the “RF1” designation.
- A batch or inspection number related to the 1852 Indian Contract, possibly part of “No. 109” or a separate sequence.
- A year or measurement code (e.g., 1854 or a dimension), though less likely given the context.
- The “104” aligns with the narrower “1,” confirming it’s not “704” (where a wider “7” was misinterpreted due to wear or lighting in earlier images).
Historical Context:
- “RF1 104” supports the firearm’s experimental or niche status under the 1852 Indian Contract, potentially linking to an American maker like Sharps (e.g., “R” for Sharps, “F” for Factory) or an inspector/contractor. The mark’s presence on the non-magnetic brass/bronze buttplate reinforces the mixed-material design (iron/steel for structural parts, brass/bronze for visible parts).