Anson 360 Sterling Purse Pen, made for Tiffany's & Neiman Marcus in the 70's, I think? Help with refills.

I checked the "I need help identifying", because I maybe able to use a different brand to refill the pen, I just don't know which brand. The refill is 4.25" long. Does anyone know where I can find a "knurled knob" refill for these pens? I have checked all the office supply stores, and the like. A specif brand/Model would be helpful if some one knows of a replacement..

The 1st pic attached is the Exact pen. The only difference is that I have a dual pen set not the pen/pencil set. They came in an Anson 360 case like the 1st pic but are Anson 360 Sterling 2 pen set.

The 2nd pic found on ebay shows the refill in the pen, this is what I want to replace. The 3rd pic comes from a site selling a different Anson Pen that uses the same refill, for a clear pic. It screws in and has a knurled aluminum knob on the back end. You can see in the last image it is the 2nd item, they call it an "Internal Thread". The last pic shows the replacement refill sheet that would have come with the set originally, but the company doesn't exist anymore.

I have found many people looking for this refill. Any help is greatly appreciated. Thank you