Help! Please help me date this Platinum Sterling Silver Pen

[PithyProlix]

I've somehow ended up with two of the grid pattern versions (large size) in the past month or so - I was doing some research and happened upon this post again.

 

On 1/20/2022 at 12:18 AM, awa54 said:

Some other "Pt. alloy" nib pens I've seen have been marked 950 on the barrel, so I wouldn't bank on this "SILVER" pen being Sterling, especially since mine doesn't tarnish as quickly as typical sterling.

 

From https://www.platinum-pen.co.jp/100th_3/e-history.html :

 

"1967

 

The world's first fountain pen with a platinum nib Platinum · Platinum (inital type) is released. Sterling silver.
Body, cap and detailed lattice pattern is decorated with rhodium plating."

 

So, unless Platinum changed the design later on, they are sterling with rhodium plating, hence the relative lack of tarnish. Both of mine had a small bit of tarnish but nothing like you would expect of sterling.