Old Guys Rule Beer Label Font

Hi everyone. I am trying to create my own vintage beer label design, but I want to find the right period fonts to use. I was wondering if anyone can tell me what font is for "Old Guys Rule" in this beer label graphic?



That's it. Thanks, Nick :)

If anyone is interested here is the beer label I made (it's Gator Lager). I'm not sure how to post a link here so if this doesn't appear or isn't clickable, my apologies.