The Op rod is a Dec 1940-Jan 1941, according to Duff's Book. I, personally use Gunbroker, and find very few op rods that early. I saw one, the guy wanted $490( to start the bidding). I have no idea if he got it. Post War Op rods on GB are $125.00 approx. A matching barrel and receiver, with the right TE/MW, $250.00 to $350.00 You might find more willing buyers on GB if you accentuate the positives.