MD, I don't know where the information on the run of 1000 in 1922 originally came from, but it seems accepted by most sources and the few examples I have seen back it up.
Accepting the 1000 run as fact, based on the two numbers I have, the serial numbers of these can be narrowed down to fall in the range from 146288 to 147954. These last 1000 would have crowned barrels and the matte blue finish on the receivers instead of the earlier high polish. The one pictured above with the warning stamp is 1452xx and it has the high luster blue - but it also has a crowned barrel, but I think the barrel is a replacement and was the work done to it in the 1930's when it got the warning stamp added.
Here is the letter for 146995, notice there is no mention from JTC of it being in a run of 1000 and he also mentions a production number of "over 150,000", serial numbers do not back that up and the Model 1909 production was serial numbered in with the 1903's and part of the total. (The size of the image had to be reduced to use the attachment option, so it's not very good.)
