Set of four optical instruments. 19th century. It includes: - RAMSDEN LONDON. Brass telescope, the body covered in leather known as “green shagreen.” A drawstring sheathed in silver-embossed paper with a floral pattern. Eyepiece system with two magnifications. Signed. England, second half of the 19th century. Length: 11 cm - Total length when open: 17 cm - three retractable theater lorgnettes in gilded brass adorned with mother-of-pearl or tortoiseshell, with three, seven, or eight drawstrings; one marked JECKER (a small chip on one lens, scratches, and slight dents). 19th century. Diameter: 3 cm to 5 cm Specimen made of sea turtle shell (Cheloniidae spp.) listed in CITES Appendix I/A. Pre-Convention specimen, dating from before 1947. Free trade within the European Union. To take the item out of the EU, a CITES re-export permit will be required (procedures and costs to be borne by the purchaser). The purchaser is advised to check the applicable laws in the country of destination, as some countries prohibit importation.