Daryl, that is understandable about the serial numbers. I have found that out in my research on Hunter Arms L.C. Smith hammer guns trying to figure when certain cosmetic changes occurred. If it were not for Jim Stubbendieck helping me out with dates that showed not all changes occurred as to serial number sequences.
Brophy and then Houchins thought the serial number groups meant that there were guns made for that entire series of numbers, not so as proved by Jim in the records. That is why Brophy's number count was higher than it really was.
In my records I have serial number 355 Quality B (double) and I only have written Very early Baker gun. Serial number 978 Quality A has patent date of 6-1-80 (J spring) and no marking on locks. Serial number 1601 Quality B 12 ga. 30" barrels has W H Baker Maker Syracuse, N.Y. on barrel.
I believe Smith Baker double guns went from serial number 300-9,999. I have serial numbers to 9877.
Serial numbers starting at 10,000 are now Center Draft bar action locks from L.C. Smith Maker Syracuse, N.Y. Patent date of Nov. 27, 83 on inside of early locks. Guns started I believe in 1884.
Here is one that baffles me and maybe you can help. It is a 16 x 16 x 38-55 that has the outside release which I thought was only a Baker thing and changed by Alexander Brown's patent for inside of guard. BUT this gun has Monroe C. Smith on top of barrel (Lyman's youngest brother)
The only number on the receiver opening is 1 but has a 2 for grade.
Has W H Baker & Co. on lock. The 38-55 first came out in 1876.
Dave here are more.
Daryl, in now thinking about what you said about the year of this gun, I think you are right. On the full picture of this gun it did not have the slide on the for-end to hold it on which makes me believe that it has a J Spring. I know who owns it and will see it soon and take some pictures of it. These were from another friend who went to a private showing and took some close ups that I had asked for, but picture of for-end was not taken.