I have a similar issue....
My in-laws gave me a singer (standard vinate black with gold leafing). However, the serial number starts with MA 010... i can't remember the last 3 digits. but its definately MA 010 to start. i called Singer. The rude woman told me she never heard of a machine with MA in the serial number in all her years there and that there was nothing in the Singer archives about it. she promptly hung up on me, but thats another issue. anyway, it says on the singer website "beginning in 1934" and my thought is that since my in laws all live in Sicily, perhaps the MA range of serial numbers were manufactured for italy and thus not saved in the singer archives? especially since there was a world war after 1934 maybe it was all destroyed? MA 010 is right at the start of the range so is it closer to 1934 then? is that how it works?
Sorry if this isnt the correct forum for this type of question...
thanks
Paul