I recentley purchased an Armstrong 81 (1973) inline, open hole, c foot flute. I got it because it has a very nice sound, however I was hoping someone out there could give me some background on this model. I have tried numerous Armstrong dealers with absolutely no luck what so ever. I have also tried to contact Con- Selmer about the subject and they to have no records going back that far, a fire, company changing hands, excuses excuses they were no help at all. So if anyone has a clue please share it with me.