Euphoria_inside,
Try to ask here:
Central Museum of Ancient Russian Culture and Art. Andrei Rublev
Phone: (495) 678-5055, 678-1489, 678-1467
Address: 107120, Moscow, Andron area, 10
Mode: * Open daily from 11.00 to 17.00, except Wednesday and last Friday of every month
Division of expertise - 678-11-12 Monday
Thursday 12-00 - 17-00
Internet:
www.museum.ru/M422 - official web page