I found an ancient tenor sax for sale. Didn't buy it so I don't have pics.
It is so old there is no low Bb. There is no Arpeggio high F key. There is no bis key or "1 and 1" mechanism for Bb. There is no F# chromatic (trill) key. Looks almost like one of those early Adolph Sax horns ... but it's Italian.
It's got something like this on the bell in very small engravng 'PRiMIATO STABIL]'
'AGOSTINO RAMPONE & BATTISTA CAZZANI & C MILANO'
'[SPORTAZIONc MONDIALE' and a 4 number serial on the back.
This is not 100% accurate but as close as I can remember it.
Is this something that collectors would be interested in? It actually plays with only a couple of leaky pads! I wouldn't want a student learning on a horn ike this since so many modern mechanisms are missing. Guy only wants $75.00 for it. Am I nuts for not grabbing it?