http://www.hunting.be/wp-content/uploads/2020/02/Belgian-Proof-Marks.pdf

If the mark is a Sigma then 1959??

See picture 20 or 26 of the Gunbroker auction

16-70 is 2 3/4 chambers

Mike

Last edited by skeettx; 05/24/20 05:44 PM.

USAF RET 1971-95 [Linked Image from jpgbox.com]