Hello, this is a truely interesting photograph. Imho it shows, that most fake developments have it�s origine in a period phenomenon.
Unfortunately the pic is blurry. Otherwise we could see what it is in the grip itself as there is(!) something between the two rivets I cannot spot exactly.
Thank you for showing this pic!
Regards,

wotan, gd.c-b#105

"Never look for sqare eggs" as a late owner of an original FHH-dagger used to say.