It's a No. 22 Rear Side Mount for top ejecting lever actions. Made by John W. Sidle for his Snap Shot telescope sight.
The front mount was an offset ring mounted with a flat base on the barrel.
Stroebel's book has the values for the scope tubes but I could find nothing about the cost of the mounts.
Thank you very much, I can find very little info on line. Does it say what model firearm it fits? I did find a few pics Sidle's work on a 1873 and 1894 Winchesters, but the mounting plates look nothing like this one.
To be kind, Stroebel's book is inaccurate on pricing. We can dream of buying at his prices !
I'd like to buy that mount as I have a home for it.
Thanks !
The woodcut illustration looked like a Deluxe 94 Winchester.
All price guides in books are useless. Either ridiculously optimistic (and then you see every hopeful with a "NRA Horrible" condition specimen wanting the Moon for his corroded treasure) or negated by inflation between printing and distribution of the book.
There's also an Uncertainty Principle that operates: A book tends to increase collector interest, which then tends to raise prices of whatever "Collectible" the book is about. The pre-publication prices in the book are then ridiculously low.
Rowe and Curtis' book on reloading tools has a better system, IMHO, where it rates them on observed rarity, on a numeric scale. This can be translated ad hoc into a rough but realistic price guide depending on inflation and collector interest.
BP | Bronze Point | IMR | Improved Military Rifle | PTD | Pointed |
BR | Bench Rest | M | Magnum | RN | Round Nose |
BT | Boat Tail | PL | Power-Lokt | SP | Soft Point |
C | Compressed Charge | PR | Primer | SPCL | Soft Point "Core-Lokt" |
HP | Hollow Point | PSPCL | Pointed Soft Point "Core Lokt" | C.O.L. | Cartridge Overall Length |
PSP | Pointed Soft Point | Spz | Spitzer Point | SBT | Spitzer Boat Tail |
LRN | Lead Round Nose | LWC | Lead Wad Cutter | LSWC | Lead Semi Wad Cutter |
GC | Gas Check |