Buffet Crampon model -- ID needed

[celebrateoften]

My instrument has this serial number: BC 60776. can you tell from that whether it is a Series 100 or 400?

How else could I tell?

Thanks.

[saxhorn4]

No one has an answer for this?

[mutha potamus]

Unfortunately, just the serial number isn't enough to differentiate. Engraving may tell the difference. If there is engraving on the key cups, it's almost certainly a Série 400.