Mt. Vernon Bach Herald Piccolo Trumpet Questions

[si3464]

hi, I just got a Herald Piccolo Trumpet Model 320 bell, 325 bell.

my question is, does it come with an extra slide like the model 311 herald piccolo trumpets of the 1970's. I included pictures of a 1970 model 311 with an extra slide.

The previous owner said that the 320 bell is for Bb and 325 is for A. is that right? How do I change keys without the extra slide. I think this is a tunable bell, but am not sure. The bells are the same length.

help please.
picture 1 is model 311 elkhart
pic 2-4 is my mt vernon with the missing slide


usedheraldpic_1 by jp554731, on Flickr

s-l500[/[url=https://flic.kr/p/ZcFfUS]s-l1600 (1) by jp554731, on Flickrurl] by jp554731, on Flickr


s-l1600 by jp554731, on Flickr

[Irving]

Maybe it came with an A extension, maybe not. You can probably have one made.