True , but the value of coins is also directly influenced but the number of collectors .
In america the hobby is flurishing and in the uk coin collectors are looked on as a little weird / strange and its also not seen as in any way mainstream like the USA.
Mind you we have the great advantage of no trump
Maybe it is only specific species of oak that are a problem. Or maybe it depends on how well the wood is seasoned, as you will be losing volatiles from the minute the tree is cut down.