Wearever Identification Help

[kwpalzang]

Hi guys, I'm still here!

I recently bought a Wearever at an antique stop. A bit of a learning experience -- made me look up the brand, and I learned that Wearever produced models prolifically, some even without names. That makes ID more challenging, of course, which is why I need your help. :3 I bought my pen for around eight bucks, by the way -- was that an OK deal? Anyway, so I am curious now as to what model it is, if it has a name, and where I can acquire a converter or cartridge(s) to use with it. The pen is the same as the one pictured to the far right in this eBay listing: http://www.ebay.com/itm/Vintage-Lot-Wearever-Fountain-Pen-Massot-Advertising-Mechanical-Pencils-/131291612152?pt=LH_DefaultDomain_0&hash=item1e919703f8 .

Thanks in advance for the help.