I just wanted to add my bag to the discussion. It came with #300338 (Jan. '65 build). Has the two-tone, thicker vinyl and the riveted/bent tabs clasps. Pretty decent shape with the exception of the torn pull. I've been told that this is one of the rare ones. It's my understanding that the bags were supplied by the dealers so it was kind of what they had on hand??? And if anyone has a 12mm allen wrench let me know!

My '65 Tool Bag.jpg

Cheers!