Chris, It's a shame that we have to grill you like this, it's not your fault, unfortunately due to the low life activities of the criminal element, I'm afraid some of the openess of these forums may be lost.
However, the information is not lost, so try asking your questions in a different way! Or search for info already here, there is a lot of it!
AFAIK any 1970 Mk2 should have a chassis plate, if it has lost this, the information on the radiator shroud is next most important. If there is nothing there it will be very dificult to determine if it's a genuine car, or a looky likey
Then it should be priced as per a nice mini with a few extra's !

I agree it is a shame that due to a few undesirables we have become on the back foot with giving information straight and directly. Best of luck with finding what you want. See you at the next general meeting of the club possibly.