Is This A Vintage Montegrappa?

[suexilin]

I need help. I asked in the Europe forum, but I am hoping here someone might know as well.

 

I came across this poorly listed pen in regional ads and I was wondering if it is a vintage Montegrappa. The seller has no other info or any desire to look for it.
It has Montegrappa written on the nib in diagonal and it looks to be a stub.
I can't figure out how to fill the pen from the available photos, is it a sac filler or a piston filler or with a cartridge, or with a button... I looked online for similar Montegrappa listings but nothing comes close to how the nib is. The pen has no visible ink window, or a clip. and it seems there was ring attached on top?
Has anyone seen such a pen or a nib?
Any help is appreciated!

 

 

 

 

 

 

 

Thanks!

[jar]

Could be. Looks like it was a button filler and in the early years Montegrappa and Parker worked together IIRC.

[suexilin]

Fascinating, thanks!

I also thought it could be a button filler, since the early models of montegrappa are said to have been, but does that mean that the sac has disappeared?

Edited April 21, 2018 by suexilin

[jar]

Likely the sac as well as a pressure bar and perhaps other stuff as well.

[suexilin]

I see. Thanks! I'll stay away from it then, pretty or not, I won't be able to use it. Maybe as a dip pen... But probably not worth the price they are asking.