I have 2 excellent condition Celestion G12M greenbacks for sale, both 16 ohms. These came from a H&K CC212 cab.
Looking for £50 each. No postage i'm afraid, but I can meet in central Scotland or they can be collected from West Lothian or Edinburgh. *sold*
Pics to follow.
Edit - see below for pics, and details of the Blackback
Postage may be an option now.