Hmm it's normally related to using some physical dongle to back up the saves of the retail carts (provided you already don't have such a dongle. I'm not sure if Gameshark/Action Replay back in gen 1/2 provided such a service, but I know Gen 3 and 4 copies did)
Because there is always a little preservationist in all of us.
It's true: we could just hack one in or make one, but somehow the notion of preserving something that once existed lights the bulb in our head.
Normally we'll preserve images of the event (distribution pamphlets, certificates, photographs showing the distribution etc) alongside the data.
I guess the next important thing I should ask if it's the same FINLAND distribution as we've obtained, or is it some other OT?