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?
Real old coins are valuable because they are rare and have historical and cultural significance. Altcoins are not rare at all, there's probably millions more of those coins that you hold in the hands of other users. Altcoins also don't have any historical significance, I'm sure in 50 years no one will care about 1ST and thousands of other coins that came and went.
Of course I'm not necessarily talking about 1ST. What happened gave me the idea that rarity would increase as users forget about their non circulating coins, passwords are lost, people dies. In fact, we may only expect that the rarity of non circulating coins increases.
As for historical and cultural significance you have a point but we may also expect that some altcoin iteration becomes revolutionary. And maybe someone is interested in collecting the original altcoin, the legacy altcoin that started everything in the future.