Thanks for the response thus far on my litho offer. When I have sorted out how to safely package the plates I will contact each of you with the price. I had hoped to use cardboard tubes but a little experimentation showed that the plates were vulnerable to damage when putting them in and removing them. I think the better way is to use stiff-backed envelopes and three different samples are being sent for me to try. It will not be possible to send such large plates by post, the 'large parcel' cost is too great so I plan to cut them in half - so you get 6 for the price of 2! I expect the cost of packaging plus postage will work out at about a tenner (except for our Belgian friend!).
The plates have been used so most of them have an advertising image on the emulsion side which can easily be removed with spirit or solvent. This leaves the grey substrate which is very securely bonded to the aluminium. There is no need to try and remove this since a range of glues, including epoxies, superphatic and zap, adhere very well to it.
If any other members would like to join the lithographers do let me know, plates are available...
Stuart