Ale-8(1), yes I know what you meant. Not denying parts swaps don't happen. As an example, there are a lot of people who had the ejector housing fly off during shooting, so replaced with later parts. I'm just saying parts swapping for the millions of Rugers produced would be a very small minority. I know, some may disagree with this, but on the average, the common man just isn't going to go parts swapping....so I tend to go with the law of averages there.
I know of a Type 1 .44 flattop in the correct low 3 digit range that was bought that had just such a swap made. The good thing was the orig. owner kept the small button rod with the gun. Then the consecutive sn to that gun, also bought as a Type 1, came from a dealer who didn't know the difference between any of the flattop variations.
For large button Type 1A .357 Blackhawks, our #6580 was shipped 9/56. That one came to us as a regular old flattop, but NIB...so have no reason to believe that one was swapped out (it came from Jim Goergen whom I also bought a NIB XR3 RSS4 and NIB blackwreath LWSC for $200 each...so good for me, he never had much Ruger knowledge
). 6592 is reported as a true Type 1 and it has a shp date of 8/56. 6523 is a 1A with large button, but it was also shipped 7/57.
Maybe Gary has some .357 FT dates he would share with us??
I also have the following dates on Type 4 flatgates (large button)...45539 12/56, 49052 10/56, 51094 10/56 and 51133 10/22/56.
For the Type 3 flatgate with small button I have 51494 noted as 10/56.
Doing a lot of research ont he RSSE I also determined that Ruger did not start installing large button ejector rods on those guns until late 10/56.
Also bear in mind that the change to a large button ejector rod coincides with .44 flattop production and bringing that model to market. Serial number 14 .44 flattop was one of the earliest guns shipped from the factory (if not the earliest), going to the American Rifleman staff and appearing in the October 1956 American Rifleman with a large button ejector rod and walnut grips. Granted...to make the 10/56 Rifleman, that test report would have had to have been submitted in September 1956...so I'm thinking 9/56 as the earliest possible moment for a large button.
Yes, the difference between 6/56 and 9/56 isn't much, but if there were many Ross flattops originally made with large ejector buttons, somebody surely would have reported them by now. That and the 1A's start showing up about sn 6266 which was produced about 800 guns after the Ross numbers.
Chet15