Quite a bit in Greener's book. It states that the first Emperor was started on 20th. March 1894 serial number 41954. Approx 45 made in total in three grades. Best Grade - the Royal at 60 guineas. Medium Grade at 45, 25 and 20 guineas and the Inexpensive grade without engraving at 16 guineas. The book shows an example with a single trigger and also one in single 4 bore owned by one of the Greener family. It says that company archives have details of 24 emperors as one of the record books is missing. Let's hope that yours is not in the missing book and details can be obtained.
Single triggers are like automatic transmission in motor vehicles; progress, but in the wrong direction. Lagopus.....
