Same above statement. My guess is early 1850s. Does anyone have serial numbers
Close to it?????

1852, on the late end of the year.
They started with 2500 in 1853.

I would also say right around 52/53, too. Just curious, does it have a round base on the radial drive or a square one?

I believe the base is round. Also it appears the knob has been replaced by a smaller grip to turn it (or was that original). Found it on a magic lantern made in the 1920s. I also got it with a 15inch b&l Cooke triplet. Will be using both. Here is a pic of the CC Harrison. It seems like a 6 inch lens. What's the going rate for these????

CC Harrison lens

Thanks for your help guys!!!!

I

Looks like a nice one. They are really getting expensive, say 600 to 1000 dollars depending. Early serial numbers that are engraved, instead of stamped (they started around the #3,000 mark) bring more money. eBay is weird these days, so sometimes the prices are all over the place.

CCH had a few different style radial drives: square based, round, fat focus, etc. but yours in definitely a replacement. Still, it is a very nice example and I am sure it will make great images.