Help me id this beautiful Platinum fountain pen

[Hamigua2000]

 

 

Picked this one up from a Japanese online auction. The nib is 18k WG <M>. I've seen some old posts that mention a pen with a "wave" pattern, but the images are all on dead websites, and I couldn't conclude anything about this pen from the text.

Edited May 9 by Hamigua2000
Added photo of pen uncapped.

[mke]

You should show it in uncapped condition too. How does the nib look like?

Is it fully closed? I wonder about the double ring.

Resembles pens from the 1970s, 1980s or latest 1990s.

 

[CarloMNL]

You might find something close to that pen in this post.

 

https://www.fountainpennetwork.com/forum/topic/359216-pilot-1970s-catalogue/

 

May help narrow down your search.

[mke]

2 minutes ago, CarloMNL said:

You might find something close to that pen in this post.

 

https://www.fountainpennetwork.com/forum/topic/359216-pilot-1970s-catalogue/

 

May help narrow down your search.

 

It is a Platinum not a Pilot pen. Look at the cap band. It is written there.

[Hamigua2000]

10 hours ago, mke said:

You should show it in uncapped condition too. How does the nib look like?

Is it fully closed? I wonder about the double ring.

Resembles pens from the 1970s, 1980s or latest 1990s.

 

I have added a photo. It is definitely fully closed. It doesn't have the zogan like the one you have here (which is also beautiful), and the pattern is just a bit different as well (though I'm sure you know that).