would like some info about my 1858 (particular cartouche)

[Mike Strietbeck]

Remington New Model Army Revolver, S/N 118165 does in fact indicate an estimated manufacturing date of December 1864. The serial number range for this time period is estimated to be 113460 - 124350. Two Principal Sub-Inspectors are recorded as functioning during this time period. W. A. Thornton and Giles Porter. Cartouches for both were the standard border of two horzontal parallel lines closed with opposing curved verticle lines.

"WAT" William Anderson Thornton. Inspector of Contract Arms@ for the Ordnance Department.

"GP" Giles Porter. APrincipal Sub-Inspector. Porter seems to have served at Remington on more than one tour of duty during the War, as the serial number range of the revolvers bearing his cartouche are spread out from 20,000 to over 100,000.

While I cannot discern in your photo's the "oval" shape border you refer to, one possibility exists that one of the following two inspectors may have used this shape imprint, on the second grip panel.

WC Unidentified inspector. Some sources identify him as William Cadwell, but this is not confirmed. Cartouche found on double cartouched revolvers in conjunction with WAT or CGC.

WW Unidentified inspector. Cartouche found on double cartouched revolvers in conjunction with WAT or CGC.

Hope this information helps,

Best regards and let me know if you would like a membership form as well.

Mike Strietbeck
RemShots

[Mike Strietbeck]

On the known examples of the two cartouche revolvers, each grip panel is embossed with one cartouche.

I don't understand "historically possible".