Even if something has a value now from collectors who says that it will be collectable in 5/10/20 years?
I have found this out this year. I have collected comics to a degree since being a pre-teen. I had/have some that in comic circles are supposedly worth quite a few quid. No Fantastic Four #1 but certainly in the tens of pounds. Try and actually sell though. I’ve got a few quid for some but nowhere near what “listed” prices suggest. On the other hand I had some of the early free Rapha mailings/brocures. A5, typical nice arty pics, less than 10 pages. I stuck em on eBay as an act of desperation/see what I’d get. Was thinking maybe a quid or 2 for each. Got £20+ for one of them and got close to £100 for the set of ten in the end.
Value (money) is in the eye (and pocket) of the buyer. Let your son play with it, it’ll never make you rich, whereas some fun for the lad may.