From their “Titan” line, I believe. Some on ebay but vintage N2N stuff has some very high asking prices. I don’t know if they actually sell at those prices, but some people ask a bunch. It always makes me want to clean out my drawer and try to sell a few. No “Titan” stuff though, sorry.
Waist sizes run very slightly snug which helps keep them where they belong while swimming. There are a bunch of size adjustments available when ordering (pouch size, pouch depth, side widths etc) but i go with “standard” for most of them with a few exceptions. This suit is the “Torpedo” with 2cm...
Assateague State Park, Maryland. Just south of Ocean City. Nudity not legal, but lots of people do it. I love it there, these days I wear a thong (for the tanlines).