Help with identifying two Waterman fountain pens.

[Medieval78]

Hello,

 

I'm new in the forum. Guys, I need some help in identifying two Waterman pens. Especially the teal/blue one. I got both as New Old Stock items.

They both look very similar but there are some differences in the nib section and minor ones on the cap and barrel. The black one is Flash model as I can see engraving saying that. Also there is stamp label 'Plume Or M Carenee'. On the teal/blue variant there is no engraving but only a stamp 'M'. I can see the biggest difference is in the nib section. Nibs comes with a different shape, the black one is hooded and they have different feed installed. I presume the black pen comes with solid gold nib but I'm not fully certain about the blue one.

 

Both pens come with a cartridge holders and the same looking ink cartridges. I have attached photos.

 

Could you tell me what model is the teal/blue one? Are they both Flash ones by any chance? What age they are?

 

Thank you.

Edited November 9 by Medieval78