Ken,

Do you have one of the Iver Johnson sideplated guns? Or the 210 model H&A that was marketed in 1914 just before they closed? I just posted pics of a Davenport sideplated gun that looks very similar to both , but is different mechanically from the H&A.

http://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=398670#Post398670

John