Can anyone identify this pen?

[MarcR1030]

I purchased this pen off Ebay not too long ago. It was sold as an "Aurora" (buyer beware) but I am almost certain it is a Pilot. Vintage, of course, but I am unable to find any sources online to help me with the identification of a specific model. I have posted some pictures here. The nib reads "special ideal pen". The pen has a plunger mechanism, which, according to the seller, is to be pulled out, then eyedropper filled, then pushed back in (I initially thought it was a vac fill but it is not). Figured I would come here to my trusty fountain pen experts in an effort to ID this one.

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