Looks like example Nr. 19 for H.A. Lindner under the 1st A&D patent/APUN number. Check the standing breech between the strikers for a APUN number:

http://www.doublegunshop.com/forums/ubbt...true#Post272601

http://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=291715&page=2

Kind Regards,

Raimey
rse