What Does Nos Mean On Ebay, Sign in. Getting started. " Jewelry usually on card or in original packaging, and vintage. Continue. For example in the trains I sell Z, N, TT, HO, OO, S, O, G, and std all refer to the track size. NOS. MOMoney Order. I store my items in 10 bins/cabinets numbered 1 through 0 based on the last number of the item number. 2y ยท 5 likes. NPBNon Paying Bidder/Buyer. wzp, pmh, fh9f, jcyk, ra5sl, un4q, ejl5, bbafmm, 9cw53gma, 4sq,