I found an old phonograph made by southern aluminum company. It's called sound master music phone. HELP.?

I've read a lot about old phonographs,

looked at quite a number of them in person,

and replaced the motor springs in one of them,

but that's a brand I've never seen or heard of.

As with any "collectable", the value is whatever someone will pay for it.

Since it's an oddball, it's probably much less desirable

than a Victor, Columbia, or Brunswick,

to name a few of the most common makes.

One way to do some research is to find an antique-radio swap near you

and ask other attendees about the item.

[There is a considerable overlap between collectors of old radios

and collectors of old phonographs.]

Otherwise, there are phonograph collectors all over the world.

An online search for them will turn up a lot more results

than a search for the exact item you have.