With a lot (a LOT) of help from JC (fjcp), here is an updated effort at understanding these delightful little things. Type 1.1 (Mongol legend, crude construction, mirror reverse, integral number) - Low 9/High 380 Type 1.2 (Mongol legend, crude construction, mirror reverse, engraved number) - Low 396/High 399 Type 2.1.1 (Mongol legend, mirror reverse, serial number at 10 o'clock) - Low 32/High 496 Type 2.1.2 (Mongol legend, mirror reverse, serial number at 7 o'clock) - Low 911/High 4100 Type 2.2.1 (Mongol legend, flat reverse, silvered brass, serial number at 6 o'clock) - Low 1128/High 1958 Type 2.2.2 (Mongol legend, flat reverse, silvered brass, serial number at 8 o'clock) - Low 865/High1806 Type 2.2.3(Mongol legend, flat reverse, silver) - Low 4400/High 4586 Type 3 (Cyrillic Legend, unnumbered) Comments, PLEASE!!! As we get to see some documents, we may be able to get some dates overlaid onto this?