I just discovered this nice web site which lets you know if you hold any rare satoshi
I think the word you want to use is
coincidental. All satoshis are
equally rare. No satoshi is more rare than any other. They are all unique (at least when enumerated with Ordinals). There is only one of each.
Furthermore, the value of a coincidence is purely subjective. Which is more valuable, satoshi 0 or satoshi 1?