Not the largest size they made, but the bigger ones look a bit different.
Value is not going to be that much, as there are a lot of them about. They used to make quite good prices on ebay but that has fallen off a lot recently as the market appears to be saturated and all collectors who wanted one have one !
I would estimate $50 - $80, it would have been a good deal more with an original key, don’t be tempted to have a key made as taking the lock apart to do so would destroy it’s value.
