I got one i was looking to sell a while back. it came off of a Remington Autoloading Shotgun (Pre-M-11), made in 1905. I beleive it will fit perfectly on a M-11.
Considering its age, it is in pretty good shape. there is a minor crack where the arrow is, plus a couple of dings here and there. the best i can tell, it has the original finish and its in good shape as well.
Originally, i was looking for $50 shipped, but if your interested, PM me and we can work something out, im not firm on the price.
Also, If you end up buying it, and it doesnt work, return it and I'll send your money back.