Honestly, I hold Les Paul in hi esteem, But! I don't think his 2300 is any more valuable than any other 2300 (to me). Nice conversation starter though.
Mark has numerous pieces of gear from the Les Paul Estate. He did/does have a pair of Altec Iconics with Les' handwriting inside, (along with some of his blood). If you dig a little, a person can find out what Mark paid for them at the auction, and maybe "dicker".