Thanks Jim for research letter. I found out some pretty cool info in my 1912 O grade 16 gauge Archived Message Posted by Brian McMahon on February 2, 2017, 4:58 pm My 1912 O grade 16 gauge was the first shotgun finished in 1912 and was the first 16 gauge finished in 1912 in any of the serial blocks in the four ledgers being used that year. The gun has 26 inch barrels, 2 triggers and shell extractors. Members if you can I recommed the research letter you can get from Dr. Jim S. Thanks again Jim Message Thread: Thanks Jim for research letter. I found out some pretty cool info in my 1912 O grade 16 gauge - Brian McMahon February 2, 2017, 4:58 pm Re: Thanks Jim for research letter. I found out some pretty cool info in my 1912 O grade 16 gauge - Mark Brown February 3, 2017, 7:06 pm   Searching