Calvin Klein

Calvin Klein eyewear has been made by Marchon since 1992, a partnership the two marked with a thirtieth-anniversary capsule; sunglasses carry a CK code, five digits and an S.

Thirty-six Calvin Klein pairs cover men's, women's and unisex styles in acetate, metal and plastic, priced in the forties and fifties. Codes run from CK18509SG to CK23533S; the letters after the digits mark the collection year and series.

Each page lists colours, the supplier's measurements and the UPC. Pairs are new and sold as authentic in Calvin Klein packaging, shipped free in the US, with 30 days to return a pair unworn.