[Antennas] Any ideas what this antenna is?

[bluesdude at cfl.rr.com]

Hello All,

I recently acquired a older tri-band vertical.
I've looked in the usual places for information on it
and I've come up with nothing.

Basically it looks just like a Cushcraft AR10 Ringo
with circular loop except that it is longer and has two traps.

Any ideas?

Tnx and 73,

Paul W4QG