A late 19th/early 20th century Russian

A late 19th/early 20th century Russian, two-colour gold mounted lapis-lazuli parasol handle, by Alexander Tillander, * St Petersburg 1896-1908, 2.3in (5.8cm) high. * Alexander Tillander and two other masters (A Tobinkov and A. Treiden) all used the same mark "AT" as Alfred Thielmann, the Faberge Workmaster & Jeweller.