As always with these things - a thing is worth what the purchaser is willing to pay and the seller is willing to accept - nothing more or less!
I have a Centenary and an even rarer (I believe) Carbine deluxe - their value to me is far more than their worth or whatever someone is prepared to pay (realistically) so I guess I will be custodian for a while!(I hope)
Wouldn't mind a .25 Airsporter sometime though!
ASM