Spectrographic analysis of this pen reveals that the material is comprised of:
|
65% |
|
18% |
|
17% |
A search through a material database finds that this alloy is called "Nickel Silver 65-18" and is further categorized as UNS C75200.
As you can see, the pen has a duller appearance and lighter in shade than a flat-top sterling silver model. Furthermore the metal somewhat resembles the old buffalo nickel coin which was comprised of 75% copper and 25% nickel.
Here are a few more pictures showing close-up details.
|
|
|
|
|
|
Perhaps this was an experimental pen developed when the price of silver skyrocketed in 1979-80. If you have information about this material when used by Parker please send me email.
Here is a comparison table in case you were wondering about the relative weights for this pen (excluding the section and nib) when compared to other 75s.
|
75 model, FP or BP |
Cap (g) |
Barrel (g) |
Total weight (g) |
|
This Ni-Ag FP |
7.0 |
7.0 |
14.0 |
|
Earliest FP with metal threaded section |
9.4 |
11.2 |
20.6 |
|
1965 flat-top FP |
8.4 |
9.5 |
17.9 |
|
Spanish Treasure Fleet FP |
8.6 |
9.6 |
18.2 |
|
Vermeil dished top FP |
7.9 |
7.5 |
15.5 |
|
7.2 |
6.9 |
14.1 | |
|
Titanium BP |
5.5 |
4.4 |
9.9 |
I think I may have found the matching BP though the lines have been filled with some material giving a light copper appearance.
This pen has a similar dull appearance, though made more attractive with the color in the grid lines.
