Casascius physical bitcoins is normally not dated,
i haven't really checked Casascius coins but apparently there are different versions, some contain bitcoin (mini private keys that hold bitcoin).
so they ARE dated, in fact their dates are the strongest and the most decentralized dating mechanism that you can hope for. how? it is linked to coins (a transaction output) on the bitcoin blockchain. the transaction that is included in a block that has a timestamp
Aside from Casascius coins, are there any ways to identify a bitcoin as collectible? Let's say block height or something. I assume eventually some bitcoin may be worth more than others, particularly older bitcoin. Does anyone know of a way you can see what height the bitcoin you own was mined? Does it basically just involve tracing the transaction history?
Do people think that eventually there will be collectors that try to accumulate older bitcoin over later bitcoin?