Thanks for all the replies!

I thought the production numbers might be in line with those of WWIi... 10% or so.

I don't think the no. 2 is as popular as some of the others... others being more of an all purpose or fighting knife.

I recently got a number 2, probably made in the mid to late 1960's (based on my limited knowledge). I'll see if I can't take some pics and get them posted.