It is a rather confusing thread at
http://www.victoriansweatshop.com/po...001?&trail=100 but it has the RAF decals on machines that were made (according to serial numbers) after 1963 from Africa, Taiwan, maybe Canada and Peru. I think that when the Clydebank under went modernization in the early 1960s they may have sent parts and decals to those places.
bkay - I had to go look at
https://dallas.craigslist.org/dal/at...456895530.html I wish they had taken better pictures and serial number. I was trying to see if it had the drop feed dogs on bed. I wonder where they got the 15J-91 model number. It also looks like it may have been converted from treadle as it doesn't appear that the motor is a
Singer motor.
Janey - Neat people never make the exciting discoveries I do.