Posted by chewie on Thursday, January 09, 2003 at 11:46AM :
In Reply to: NP 420, not NP 435(which was not used until 1964) ntxt posted by Eric B. on Thursday, January 09, 2003 at 9:02AM :
Thanks for setting me straight. :) I was thinking that the 435 was the synchro that came out in '55.