As for the Greenen, I was going by what Greeners told me on the subject; there is some mention of the action in Greener's book The Gun & Its Development.
A number of these Greenens turn up and having discussed the subject in the Internetgunclub site they put the name into their search facility.
The 'D' and the 'L' stand for Discharged and Loaded and were cocking indicators. A lot of people were mistrusting of the safety of some of these early hammerless actions and a number have some sort of patent loaded indicator.
Pete, that one is a shocker! I wish now that I had a photo of that James Pardey that I came across. Lagopus.....
