I'm far from an expert & echo the advice on seeking museum input. One thing that may help identify early Darby pots is that they were sectionally cast (cast in pieces and then joined together). This leaves very visible seams that you can see in my photograph below
Cauldron 5 by British Red, on...
I was given a workshop haul of old knives today. Very much working knives not belt knives - at least half a dozen putty knives in various sizes! There's one tiny knife that I suspect is hand adapted unless anyone knows better?
Small knife with thumb plate by English Countrylife, on Flickr...
You might like this too, sent to me by friends in ASI Australia. They knap Mookaite Jasper. I love this arrow head they made me & wear it on my jacket. I don't know if it's THE prettiest stone to knap, but it must be a contender!
Mookaite flint knapped arrow head by English Countrylife, on Flickr
This was me learning to knap back in '07 with a chap who I think might have had some experience
Red & John Lord by British Red, on Flickr
Red End by British Red, on Flickr
JL large flint by British Red, on Flickr
I still have the axe head he made for me. It's a work of art
I came across this website last night selling Fiskars sappies off cheaply. Their X17 splitting axe also seemed cheap (£27 )