Help with a Zenith

[mrflagman]

I picked this Zenith bike up at a swap meet last weekend. Any help indentifying this bike would be appreciated. I can't find a serial number, where would I look?

More pics here:http://www.ratrodbikes.com/forum/viewtopic.php?f=16&t=44347

 

[deorman]

Those look like H.P. Snyder rear dropouts. :|