Sherwood Identification Please

Hi,
I'm trying to figure out which model of Sherwood 1st stage this is. Mostly whether it is suitable for cold water use ie 40F. I see it has the air bleed and the only external markings are the patent NO "4226 257", the yoke is marked "3500" near the reg body and marked "C 85" near the handwheel. I a)don't want to bet the life of the buddy I'm going to loan it to that it will like cold and b) don't want to spend the dough to rebuild if it's not suited to cold water use.
Thanks for any help, Brad

there's a sherwood rep that is a member, send him the pic.

I hope you get an answer to this. I have exactly the same first stage on my old Sherwood reg circa 1983.

I do know that the HP port is really strange. I tried to use an Oceanic computer with it and never did find an adapter that would make it work. I tried three different LDS and they all went through every fitting they had.

-Charles

Why don't you email Sherwood ?

Welcome to Sherwood Scuba!