Ken, Thank-you so much for your response. It is very interesting. Now I just need to go find out what a 'scott spindle' is.
How detailed is your database Ken? This gun has 26" bbls which I found unusual. They appear to be uncut because to my amateur eye they touch and appear to have keels in place, although the front sight has been replaced with a brass screw.
I have another CD gun with a SN under 1100 (I think) that has a Jones underlever. I will try to post pictures sometime if you would care to comment on it as well.
Ken do you know if CD hammer shot guns were sequentially numbered? Or did each individual maker of CD guns start a new sequence of SNs; or did CD assign different SN ranges for different makers and/or different gauges as some american makers did?
Thank-you again, erick