(Sorry to say that I'm missing the page on the Bb tenor and the C Melody tenor from the above 1923 catalog.)
The Straight Alto and Tipped Bell sopranos are described on a separate page.
The models above essentially reflect the Buescher products post 1916/7. Your mileage may vary.
Some explanation is needed.
* The Model 121 Bb Soprano is the Tipped Bell instrument. The Model 120 Eb alto is the Straight model. As you can see, there isn't a difference in prices between the "regular" alto models or "regular" soprano models.
* Note that the range of instruments is from Eb sopranino to Bb bass. There is no Eb contrabass in the lineup. I have heard, but I cannot yet document, that Buescher did something similar to what Conn did when it came to the Eb contrabass: they imported a completely different instrument. In this case it wasthe ROTHOPHONE. For way more information on the Rothophone, go to http://oddwinds.wikispaces.com/Rothphone.
* There was an enamel finish available *probably* at the same time, with (approximately) the same color selections and at (approximately) the same price as the Conn New Wonder instruments. Quoting myself, from the Conn pages:
CHROME FINISH was the [Conn] trade name for a colored enamel finish. Available colors were red, white, blue, green, Old Rose ("dark pink") and black. This was available as an add-on for any style of plating for a mere $15 extra, in March 1922 dollars.
POLY-CHROME FINISH was the [Conn] trade name for the CHROME finish, but with added "beautiful designs on bell or body of flowers, vines, etc. in various colors" and cost $25 extra, in March 1922 dollars.
This finish was brought to my attention by SAXTEK and his beautiful green enamel straight alto. He has an original factory warranty card and the original receipt, so I have no reason to doubt that enamel was a factory original finish.
* I've started seeing fairly elaborately engraved gold-plated horns after around 1916 (and earlier examples probably exist). I'm generically calling these "Artist Models", to separate them from the "standard" gold plated horns.
* You may also wish to read about the "gold wash" found in the bell of many silver-plated Bueschers. There's a very nice article at cybersax.com.