It's an older Sherwood Blizzard or possibly a Magnum - IDK the line well enough to be sure.
Real solid reg in it's time but I would not pay a lot for it now. It should be good to use if you can get it serviced but at $100 for service - add 0$150 or so more and you can buy new....
The gauges look to be late 80's or maybe a little newer.
How about telling us the PRICE? so we can comment on the deal.
So, it's not worth it if I can't find kit or can't rebuild myself. I guess same goes for the first 3 choices (too old) then.
Thanks.