I'm not sure what you mean by your first question.. But the bakelite grips where added as a lack of wood and resources in mid 1941, so any 41 or 42 byf made after that period can be issued with bakelite grips.
Btw. I'm glad this thread so far is without the 'B.. W.. '-term. If it does, I will be start calling my byf42 'Pink Panter' from the colour on the 'Gesichert'
