Here are the grips from a BYF 41 that I just purchased. Overall, they look OK to me. The material appears to be bakelite and - hard to quantify - they look old. The inside has threaded holes and the outside has a line between the chequering and the grip edges. The inside of the right grip looks a bit beaten up and has what look like mould marks. What's the opinion of the forum on these? (I didn't pay a premium to get them so if they're real it's a bonus.)
http://boards.rennlist.com/lfupload/BWGripsinside.JPG
http://boards.rennlist.com/lfupload/BWGripsoutside.JPG