Best small show buy, I found in a small show was in an old closed Target store. Maybe 30 tables, $3.00 to get in. Did a quick walk-a-round and was about to leave and stopped and looked in a Junk box marked $5.00 anything in box. Picked out pre N frame grip adapter. when I bought it I asked the vender what it was, he said no idea. OK by me. Put it on my 1936 Registered Magnum.
SWCA 892