femurat wrote:GTC wrote:Well zero response from
export@serme.it. Apparently they don't care.
Keep in mind that yesterday was holiday here, so they may haven't seen your email yet.
I'm Happy to hear you were able to get your keys anyway.
Cheers

Thank you again for your help. Much appreciated.
And to double validate your identification of that lock, today I was up close to another Ahlborn-Galanti organ (a much larger model) whose original key was in the lock. The key had the unmistakable elephant-shaped M of the Meroni brand on one side and the other side was stamped 464, which is the same number on my lock, so it seems that there was probably just the one key for all of their organs with an A-G catalog part number.
Although it's now academic, it will be interesting to see if Meroni ever replies to my email.