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.
I've got copies of sales from 1919 to 1925 I got from Steve (Savparts) years ago stating the same.
1920 - 2 1903's
1921 - 3 1903's
1922 - 1088 1903's.
