These are close-ups of the engraving on the bell of a 38B Connstellation. The picture on the left reads:

C.G.Conn LTD.
Connstellation
Elkhart - U.S.A.

The picture on the right reads:

C.G.Conn LTD.
Connstellation
Abiline Texas-U.S.A.

The instrument in the picture on the left is dated approximately 1961, so it does include the word "Elkhart". Models between 1971 and 1972 are like the picture on the right, with "Elkhart" having been replaced by "Abiline Texas". Probably from 1973 the engraving simply read "Connstellation, USA" in the same format as these pictures but without the "Elkhart" or "Abiline Texas".

This engraving is the same on the 36B Lightweight Connstellation trumpet, 28A Connstellation long cornet, 37A/38A Connstellation short cornet and the 48H Connstellation trombone.