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Shotgun Question--"GIB" Spanish made

2K views 2 replies 2 participants last post by  dave58 
#1 ·
I have received a double barrel shotgun in great shape with no manufacturer name except for "made for the American port company San Francisco Calif." Taking it apart the internal markings appear to make it a Spanish made shotgun and from some of the markings perhaps made in 1974.
Trying to determine shell size and choke (if any). Some of the internal markings are:
1590 GMOS
Gauge 12-76
Any insight on this DB S/S or where to locate it would be very appreciated.
dave
 
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