You might want to take a look in the Collectibles board https://bitcointalk.org/index.php?board=217.0
There are people who are selling funded coins that go back a while.

The 4 year time frame you are looking for is going to be tough with just a 10% over since there is about 5%+ of value of forks on those coins and the value of the collectable itself.

There are probably a lot of people with mid to late 2018 wallets out there, after a lot of the forks calmed down.

Then you get to the really old stuff that is going to have an even higher premium on it because it's just cool having the earlier coins.

-Dave