Here's three receiver's with markings...
1. Jam imperial (the barrels are marked beristain)
2. Union armera 210E
3. Aremberri 56
The receivers are on the link below. You've got to log into gunboards to see pics. Someone posted a site on gunboards with codes but I only see a few listed. Thanks!
The barrels on the jam show P1 (also says jam on the barrel flat)...1971? M1 on the union armera? 1967? L1 on Aremberri 56? 1966?
Did Jam make a decent top of the line gun? It's got a Jade front sight....that seems very unusual. Could the earlier versions have been better guns? The quality seems much better then todays guns along with the over all metal. It looks like a better quality then todays guns. Did Jam start making DB's in 1970? It looks so good...I know looks can be decieving. The Union armera 210E Seems like the best craftsmanship of the three...jeweled receiver and barrel hook.
[img]
http://forums.gunboards.com/showthread.php?p=839230#post839230[/img]