If I'm not mistaken the "electro-forged" Schwinns weren't made of tubing at
all in the usual sense; steel strip stock was formed into the tubes and
joints of the frame and all flash-welded together. See
http://sheldonbrown.com/
Anyway, I have a 1953 Varsity that is clearly fillet-brazed. It's much like an English Sports model. They normally had Sturmey AW hubs, but mine has a coaster hub (with two caliper brakes as well!) and the Schwinn S6 rims (26 x 1-1/4 as usually measured). It's too small for me and I'd like to part with it. If anyone is interested, please contact me off list.
David Bean
Arlington, MA USA
beandk at are-see-enn dot com