Model:

28D

Serial Number:

390643

Year:

1949

Manufactured in:

Elkhart, IN Abilene, TX Eastlake, OH

*Lacquered:

Yes No

*Serial Number
Location:

Lever Bridge
Change Valve Casing
Other

*Change Valve:

Mechanical
String
Converted
       to String

C.G.Conn LTD, Elkhart, IND, USA
C.G.Conn LTD, USA (No reference to Elkhart)
Conn 8D
Other, please specify:

Fixed
Factory Screw Bell
Screw Bell Conversion

Horn has the following
(Check all that apply):

Metal Hand Guard
Finger Hook

Music Lyre Holder
Oil Hole

Bb First Valve Slide:

Straight
"Sock Foot"

*2nd Valve Pull Ring:

Round
Flat
Oval

Change Rotor is:

Tapered
Cylinderical

2nd Rotor is:

Tapered
Cylindrical

Venturi Diameter:

Venturi Depth:

Change Rotor
Top Diameter:

Change Rotor
Bottom Diameter:

2nd Rotor
Top Diameter:

0.823

2nd Rotor
Bottom Diameter:

0.860

Cylinderical Tube ID:

.468

Cylinderical Tube
Thickness:

0.015

Branch OD at
Change Rotor:

0.500

Branch OD at
Bell Tail Ferrule:

0.650

Bell Tail OD
at Branch:

0.670

Bell Flare
Outside Diameter:

12.1

Bell Flare Seam
Circumference:

"5.75

Horn Weight:

Bell Flare Thickness
at Edge:

.0125

Custom modifications:

Horn is all original - 28D stamped on mp receiver. Receiver has two grooves/ridges at base. Leadpipe is nickel silver as are all slide sockets/receivers.