Hello! I'm new to the pen thing, other than enjoying writing with my dad's old Parker, and particularly MB. I fell for a MB #14 in GREEN on an eBay page from Japan. I didn't win darnit, but the vendor has had other models (all two and three digit models) in this particular wonderful GREEN! I'm reluctant to buy for many reasons - but my lack of knowledge for these pens (and buying used) is top of the list.

Is there anywhere that tells the approximate age of these two-three digit models, and of when MB used the green for them?
Is there anywhere that shows sizes comparitively to the modern models?
The nibs and how they are "covered" on these are so different than the modern MB's and other pens. Was that just "style"?
Were these piston filled?
I would appreciate any info and help on these!

I will start reading on this subforum - forgive if there are threads which do.