It's not so much "WHERE and WHO" a saxophone was, more important is "HOW" it was made. That will decide the playability.
To make a 30 saxes one year, 300 another year and some years later 3000 saxes ..... everyone that knows anything about producing and mass produce stuff knows that this is a very hard task. I'm not saying it's not possible but if a sax was entirely made ....... .
I found some pictures of King Margiaux sax engraving. These saxes use to be called as SML stencils. Made by SML for King (probably just King Musical Instruments). You can see how the engraving was changed over the years.
Well, it's in good shape overall with an aged patina as befits a 75 year old. The only damage being a shallow dent on the bow, here...
Some nice engraving...
Jon, the case is quite sturdy but falling to pieces. I'll keep it but I have a spare Yamaha case which it fits perfectly, and the lid closes to secure it nicely...
The B&S 190 mouthpiece was fitted to the neck, perhaps the favourite as it's well worn. I know nothing about these. May be HR but I'm guessing these were utilitarian back in the day?...
Also nice to have a pretty pristine Selmer S80 C** with lig and a neck stopper (not that it fits well, hence a champagne cork now in place.
A disgusting dissolving plastic thumb rest cover which will go in the bin. Thought you'd like to see it first...
Then around 50 pages of music, all written in note form, with some clues as to who owned this perhaps, and who their tutor was 30 years ago...