Walter, in an earlier post you said "The serial number of my OM Blackhawk .41 Magnum with the 6.5" barrel is 10569. There is no "D" stamp."
Now you say "Ruger Records sent me a copy of the shipping invoices for both the original serial # 10569, a BKH41 that shipped to Yakima Hardware Co. in Yakima WA on 7/31/67 and mine, the BKH42 S/N [D]10569."
Does your gun have a "D" stamp or not? This is the key here.
Now you say "Ruger Records sent me a copy of the shipping invoices for both the original serial # 10569, a BKH41 that shipped to Yakima Hardware Co. in Yakima WA on 7/31/67 and mine, the BKH42 S/N [D]10569."
Does your gun have a "D" stamp or not? This is the key here.