Small end of bell measurements

[bububassboner]

Good day,
Does anyone here know the size of the small end of the following bells?

Alexander 164
Cerveny 601
Willson 3050
MW Thor

Thanks in advance

[bububassboner]

Bump. I would take measurements from any "5/4"ish Tuba. If you have a tuba from this list or anything else you consider to be 5/4 if you could take a cloth measuring tape and go around the outside right above the bell to bottom bow joint that would be great.

Thanks in advance