Gregdownunder,
Serial number 34835 ,gun made 1892.
"List," Was a grading/price code used by Greener from 1884-1894.List 27 states that your gun sold for 20 guineas and was the least expensive gun in their mid quality guns. By comparison their best gun at this time sold for 60 guineas.
Reproof and Nitro Proof marks are circa 1904-1925.
For further reading see Graham Greeners book, The Greener Story.

Roy Hebbes