Maybe the best would be to take offers for him ?
I think I won't give him a replacement tail, it is easy to do for the buyer if he/she wants to do it, and maybe some people prefer him 100% authentic ... I can search in my sales box if I have a pony with a matching color tail and let the buyer decide too.
He will come with his original washer, though, and even the tiny bit of plastic from the tail hole, I found both inside his body.
He has some marks and glue residue in his neck, I'll take better pics and will make a full description of his flaws.