8 bore and 16 bore carts

[sanibel686 29]

I recently aquired these cartridges as part of a job lot

I have 68, 8 bore cartridges stamped winchester "super x"

25 are in a box marked alan myers, the rest are unboxed

 

I also have around 550 of the 2 1/2" 16 bore shown.

 

There is one 12 bore in the photos for scale

 

I have no idea how to value these 8 bore. The boxed set has £49.50 marked on it. Does anyone have any advice or websites I could look at before I decide on a fair price.

many thanks lads