Tim,
My numbers are similar.
21 is Janesville WI
DS is 1 Ton or 3/4 Ton Special
A is January
1264 is the squence number
I have been told that 2629 were produced and this was probably done in the first few months of 1947.
This is my best guess and comes Brads 41-46 Website and help from some other guys on this site.
Looks like you, Marv and I should rendeyvous and stage a parade up here in the great white North!
