There is a similar wallet dated 1749 in the collection at Colonial Williamsburg. Wallet or letter case embroidered with silks and metal threads on green silk. Three layers and a lining (which may have been replaced at a later date with purple silk). Layer of white card stiffening, a layer of green silk tabby and a top layer of embroidered green satin. It has been folded twice to form a front and back panel and a flap. There are French knots and three types of metal thread: Strip, wire and purl. The pocket gave its name to other portable accessories such as the pocket book or pocket case. These were often made in silk, and beautifully embroidered with silk or silk ribbon and metal threads. Some had silver-gilt fringes, strings and tassels, others were signed and dated. Letter cases were sometimes brought back as souvenirs by travellers or given as gifts by foreign envoys. This example is dated 1748 and embroidered CONSTANTINOPLE. Wallet embroidered with silks and metal threads, Istanbul, dated 1748