Originally Posted by CJF
The bottom rib is marked 5624 10 158 11.8 Haven't figured that one out yet.

That would be the preliminary datastring on the 1st pass - #5624 - 10(not sure) - 15*8mm and 11*8mm 1st past diameters.

If I could see it I could interpret it.

Viennese style forend lever:

>>The grip catch was patented by Charles Harvey, an employee with Wilkinson & Son of 27 Pall Mall, London in patent no.1793 of 7 July 1866<<


Almost all of Hannover firearms merchant H. Scherping's wares wore that style forend fastner.