I have two of these. They're not "new" but they haven't been in the water either.

I just bought these. a couple of months ago. One had a bad o-ring in the first stage and the seal blew. Sherwood / my dealer gave me a whole new regulator.
http://www.sherwoodscuba.com/product.php?product_id=266

My wife said "Hell NO!!! Sell them."
I'm using Atomic M1's and they work fine anyway: that is, after recent servicing.
Just took them to 300' Friday without a problem.

These SR1 regulators were set up with my hoses for cave diving and checked to hold air but never dove.

I think the new DIN version is still hard to get. I paid over $1200 at my local dive store and that looks like the going rate for yoke on the internet.
Will sell each for $500 or both for $900. Or entertain offers.

Richard
Tallahassee