I often put things in my blog, okay like 90% of the time, that are all about me being able to find them in the future. So it is with this picture (GIANT SAXOPHONE IS SO LARGE PLAYER STANDS ON LADDER (Jun, 1924) from Popular mechanics in 1924. I followed this link from a note in Facebook from Terry Hummer, writing professor and saxophonist enthusiast.
Terry sez, “It did work. It required 3 players: one for the upper stack, one for the lower, and one to blow. Three of these instruments were made; they were melted down for the metal during the war, so no longer exist. They were a Conn company advertising gimmick, but they really did work. Accounts of witnesses report that “it sounded like an earthquake.” No recordings were ever made, alas.
There was an article about these instruments (double e-flat contrabass saxes) in Saxophone Journal years ago.”
To bad it was melted down for something as sax as a war. And to have made three of them is at the very least astonishing. Anyone else think the young lady looks like a billboard?
The Bis Key Chronicles 
You’ll note, by the overall dimensions, and the fact that the bottom leg of the ‘bell B’ guard is well above the joint, that this is in fact a giant C-Melody sax… Such taste, no other sax would do ! I’d hate to have to repad that one…The young lady’s legs (not that I was staring…) do look decidedly two dimensional. That’s made my day, the biggest C-Melody in the world. Any idea of shipping costs ?
Jim,a great finding.I am going to use this one of these days :-)cheers,