[Milsurplus] ? on BC-342 data plate

[barry tuttleman]

i pulled the data plate on the BC-342 i am parting out; if you view the
picture of the plate:
http://home.att.net/~btuttleman1/bc342data3.jpg

you'll see a stamped "M" after the "N"; was this common or typical?
barry
carson city nv
-- 
Barry Tuttleman
Carson City, Nevada

electronics-related website:
http://home.att.net/~btuttleman2/electron.html

industrial-related website:
http://home.att.net/~btuttleman/barrysite.html