In the 1940s, various companies introduced a cornet model with an "underslung" tuning slide design, where the main tuning slide wrapped around the valve block:
By the standards of this website, the above design is not considered "odd", as Conn, Reynolds, King (H. N. White), Olds, and other companies all had a model like that.
Therefore, this section will cover designs that had the tuning slide double back on itself before entering the valve block:
Let's start with Conn:
Type: Cornet
Brand: Conn
Maker: Yamaha
Model: Director
Model №: 19A [brass bell] & 21A [copper bell]
Where made: Japan
Dates of manufacture: 1971 [approx.]
Note that this horn was made by Yamaha for Conn, but the design was credited to Renold Schilke. This wrap was apparently a creative way to be able to use one valve block for both trumpets and cornets.
Note that the tuning slide doubles back on itself, then enters the 3rd valve, all on the right-hand side of the cornet.
^ 19A on left, 21A on right
Later, the model was changed slightly, with different engraving, valves, and place of manufacture:
Type: Cornet
Brand: Conn
Maker: C. G. Conn, Ltd.
Model: Director [only named so in print references]
Model №: 16A [brass bell only]
Where made: Abilene, TX, U. S. A.
Dates of manufacture: 1973 - 1977 [this specific design]
In about 1977, Conn changed the 16A design to an ordinary-looking cornet.
Besides Conn, B&S in Germany [possibly East Germany for this cornet] used the design:
Type: Cornet
Brand: B&S
Maker: B&S [today JA Musik - Vogtländische Musikinstrumentenfabrik GmbH]
Model: ?
Model №: ?
Where made: probably Markneukirchen or Klingenthal, [East] Germany
Dates of manufacture: [mid-20th century?]
Excepting the shepherd's crook, this horn bears a definite resemblance to the Schilke-designed Conns, although I do not know if there are any connections between either designer.
Interestingly enough, this underslung-tuning-slide configuration can also be found in a model of Willson cornet, and Willson produced Conn's 24A "Switzerland" flugelhorn.
Type: Cornet
Brand: Willson
Maker: Kurath-Willson Brass
Model: ?
Model №: ?
Where made: Flums, Switzerland
Dates of manufacture: 1960s-1990s?
This design also appears here:
Type: Cornet
Brand: Holton
Maker: Frank Holton & Co.
Model: New Proportion
Model №: [likely none]
Where made: Chicago, IL, U. S. A.
Dates of manufacture: 1914 [this specific horn]
Besides the shepherd's crook, the one main difference between this and the previously mentioned cornets is that the tubing going into the third valve extends more than the other designs.
Type: Cornet
Brand: Vito
Maker: Courtois?
Model: ?
Model №: [likely none, but serial is 6928]
Where made: [Paris?] France [on valve block; bell says Kenosha, Wis.]
Dates of manufacture: ?
Like most other [non-Holton] Leblanc brasses, this cornet is probably a French Courtois stencil, reaffirmed by the stamp on the valve block. The bell, however, gives Kenosha, Wisconsin as the location [although this is where Leblanc was headquartered].
Even Chinese manufacturers use this design:
Type: Cornet
Brand: Berkeley, Jessy, and others
Maker: Tianjin Jessy Musical Instrument Co., Ltd.
Model: Jessy OEM
Model №: JCRC-110
Where made: Tianjin, China
Dates of manufacture: 2000s
Today, this design is still available with a slight modification:
Type: Cornet
Brand: Getzen
Maker: Getzen
Model: Eterna
Model №: 800
Where made: Elkhorn, WI, U. S. A.
Dates of manufacture: 2000s
Notice that the tuning slide doubles back underneath itself instead of beside itself (as in the aforementioned models). This uniquer design is also used on the Blessing B141 Artist cornet. The horns listed below follow the Schilke/Holton/B&S design trend.
Those are cornets that use this basic design. Some pocket trumpets use it as well:
Type: Pocket trumpet
Brand: Calicchio
Maker: Domenick Calicchio
Model: Pocket
Model №: [likely none]
Where made: Los Angeles, CA
Dates of manufacture: 1969 [this specific horn]
and another one:
Type: Pocket trumpet
Brand: Calicchio
Maker: D. Calicchio
Model: Pocket
Model №: [likely none]
Where made: Los Angeles, CA
Dates of manufacture: 1983 [this specific horn]
Notice that some bends and tubing lengths differ, but the designs are the same otherwise.