Advice on price please

cbilly22

Hi all.
A mate of mine has been given a load of spares and in amongst them is a set of original Fender tuners from, I think, the 70s.
He was wondering what a fair price would be for them. He isn't greedy but at the same time wouldn't like to let them go for way less than they are worth. I've had a look and they do indeed appear to be an unopened packet...there is even a little rust on the staples holding the card to the packet.....an awesome relicing job
I would presume there is a market for this sort of thing so any advice appreciated. Cheers.

oh, apologies for the less than stellar pics!

https://i.imgur.com/W6VyTQO.jpg

https://i.imgur.com/Gi69PiV.jpg

https://i.imgur.com/GmstC0B.jpg