From the 1931 Selmer Super Sax publication
This "Super-sax" has the largest bore of any alto saxophone...
If you want the fullest tone..the best tuning..the fastest action..the greatest carrying power..utmost in durability...here is your ideal saxophone.
Extra post reinforcement - notice that all key posts have reinforcing "ribs" - like a well made flute - to maintain perfect alignment and adjustment even though instrument may be roughly handled. The "SUPERSAX" is built as only a master builds. Truly the lifetime Sax.
Automatic G# Key This key arrangement eliminates the old awkward fingering of sliding to and from the low Bb, B, C# keys to the G# key. Power-hammered lifetime keys and mechanism.
Scientifically designed octave key level - notice how this power-hammered octave key curves right into the correct position? In meets your thumb and permits lightning execution of trills and octave jumps.
High Speed leverage trill keys - These Bb - C trill keys show the master designer's ability. You'll have to actually try them to appreciate their lightning response to your demands. You'll marvel at their speed. Power-hammered keys and mechanism.
Hair - Trigger action octave mechanism - fastest and strongest made. Better clearance - so "whiz" on high "A". So fast is this new octave mechanism that it is truly "Hair-Trigger"! Trills, involved arpeggios, and complicated figurations that include fast octave jumps, are now played with ease on this "Super-Sax" - thanks to the master hand of Henri Selmer. All parts are strongly made of power-hammered bronze-brass, assuring a lifetime of wear and service...Truly this is the lifetime saxophone
Selmer 14935 is a US-Market Alto which shipped from Paris in July 1931, without lacquer, engraving or final set-up, which would have occurred in Elkhart Indiana.
Gold plating likely done in Elkhart, as was standard with the time. DOES NOT belong to the 20 GP SSS that were made in Paris. Likely part of 60 or so GP London/Toronto/Elkhart SSS altos.