MY QUESTION IS:
May some day this noncirculating coins in my wallet be worth anything? May them have a future collectable value as happens with real old coins?
Nope! It's better for you to forget about this coins which has been changed to a new name/chain and also made non-used coins out of circulation. That's of no use to be honest!
I am also facing a similar issue with a token whose value was around 1.2 ETH but the developers have migrated to a new chain and they are now denying any help. So it's better for me to forget about these tokens as it has no value.