I think an upper and lower realized value may have been noted and I hope you get $4k pounds sterling but you are going to have to match the gun to the buyer with the market being narrow. I don't think it will realize a value at or over 1725 pounds sterling.

Well, after staring at the action for some time it finally came to me: Collath. The protrusions on the standing breech and the circular component in the receiver as well as the end of the forend. Let me check for some Collath examples. I think he joined Teschner in the mid 1850s so he was well aware of the system.



A pic of the standing breech and a close-up of the forend might aide.

Kind Regards,

Raimey
rse