[Tagging] RFC - More sensible values for fountain=*

[Marc_marc]

Le 11.10.22 à 12:27, Martin Koppenhoefer a écrit :
> When we tag a “model” it will sooner or later become a geek tag which 
> would indeed distinguish a 60ies from a 90ies nasone :D

model=nasone as a 1st step
if ppl want, model=nasone_1960 or model=nasone:1960 or :date isn't
an issue