Hopefully this will be the right place to ask the question.
I've been airgun shooting for years, and rarely get rid of anything.
Going through my 'scopes, I find I have a number of excellent scopes from the 70s and 80s that I could do with selling, so an idea of values would be appreciated:

Zeiss Diatal C 6 x 32
Zeiss Diatal ZA T* 6 x 42
Zeiss Diavari C T* 3 - 9 x 36 ( probably my favourite! )
Kassnar Beta 3 6 x 42 with level ( old faithful )
Burris Mini 4 - 12 x 33 PA
Tasco Titan 1.5 - 6 x 42 ( 30mm tube. Brand new )

They are all in excellent condition.
Any help with valuation appreciated, even if only for my insurers!
Cheers