Hi

I bought a collection of magic and there were in it among others two tricks I think they are mentalism tricks, but I have no idea what they are and how they are performed
The first one is in a cardboard box labled BOXES OF CHANG, and it consist of 5 colored woods look like colored playing card sleves, and there are playing cards with symboles

The second is a large wood blackboard with 6 circles drawn(3 circles on the top and 3 at the bottom) and metal cover with a question mark "?" that can cover either the 3 top circles or 3 bottom circles, It looks like the Mental Epic, but does not have any gimmick like the mental epic

if anyone knows , Please let me know

Thanks

Pertamax