OldddffAASSTT the Spin Master Extraordinaire and American Lock Slayer
Posts: 4412
Joined: Thu Mar 31, 2011 9:16 am
Location: Michigan
Re: 1976 Sargent & Greenleaf 826C
Ten yrs later (1983) my HI-SHEAR is a little better, but still has only one lipped mushroom viewtopic.php?p=44887#p44887
But yeah, for the time, I'm sure these were considered (and were) very high-security. Thanks for the show & tell Corey!