This was peddled by Schoverling, Daly & Gales as they had a satellite sourcing station @ 65 Weaman Street, Birmingham, England in the 1870s & possibly 1880s. Not sure which continental maker used that design?

http://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=469137&#Post469137

Cheers,

Raimey
rse