Need help identifying a few holsters...

-Brown, right hand holster, stamped Brauer Bros, St. Louis on back, also marked on back "AB 00". Looks like for small semi-auto pistol, Baby Browning/Colt Vest Pocket size.

-Black, left handed, floral carved holster. Marked on back Bucheimer Perfect Fit, marked B16F.

-Brown, right handed, Red Head stamped on snaps, stamped on back "204D B 6"

-Black, right handed, Hunter stamped on back "1100R 18"

I appreciate any info you might give me. I have had these handed down to me from my wife's grandfather, saying to me "maybe you can do something with these", but I don't even know what they're for, nor do I even know where to look for info. I'm hoping somebody may be a leather holster collector, or has some old Brauer, Bucheimer, Hunter or Red Head catalogs that they could look these up for me.

I appreciate in advance any help you might be able to offer me.

Kindest regards,

BigBore45Colt