I purchased a few Gustin Natural straps and have one extra that I'm not going to use. Never mounted to a watch and in new condition. 20mm size. $45 plus $5.25 shipping. I have it on eBay here: http://www.ebay.com/itm/141862704331?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649
**The Omega pictured is mounted on another, but identical, strap and is for display purposes and not included in the sale. Duh.