I have a somewhat unusual No.3. It's a BSA made in 1918. I assume, from the condition, that it was made late war and never actually issued. The pictures show some of the interesting stamps on it. You'll note how some military marks have been cancelled, the fact that a second (probably civilian) serial number was applied, and the "Sale Permit" and crown on the knox form. Condition was excellent except for some varnish I had to strip off the stock when I got it. Interesting piece.