Parker 51 Medical Trio - forest green?

[mresimulator]

Hi folks!


I found in the wild a Parker 51 FP, pencil and thermometer set with leather case. I've never seen one before. Looking around at internet I found this post.
http://fountainpenboard.com/forum/in...er-holder-set/
what I found is identical to the "parker 51 Medical trio set" (see attached).
The catalog indicates that the FP, Pencil and thermoemter case only come in black, but the set I found is green (forest green maybe, according to the Richard Binder site, because its an aero P51).
Can you give some information about the manufacture year, more ads, etc?

Any information, picture orimages is appreciated.

Regards,