Well, Franklin was picked up today. I got a bit teary eyed (sad, I know.) and said goodbye to him.
Just got a message from the lady who's taken him on, and apparantly he bit her when he arrived.....probably the travel to be fair to the little guy! He's keeping the name Franklin which surprises me, but I'm happy he's with knowledgeable people. He has a problem with his eye, and it's more serious than I had first realised, the lady that took him on has had experience of the same problem with a previous hairless rat and is fully prepared to pay what it costs to rectify. (She was told of the problem before she took him, so I didn't sneak a "problem animal" on her!)
She's hoping to send me a photo of him settling in later. If she does, I'll try and put it on the thread!
Thanks for the answers, Sam and Lynn.