I do not think the lead bars for the forend were on a William J. Nittler of San Francisco, California modified scattergun nor on one retailed by Kerr Sport Shop of 9584 Wilshire Boulevard in Beverly Hills founded by Alexander H. Kerr in the 1930s. But I wanted to mention them.

https://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=480428&page=1

Serbus,

Raimey
rse