In 1948 Sheaffer stopped using the striped Radite (celluloid by DuPont) they introduced in 1936 and switched to Radite II (Forticel by Celanese). The celluloid pens were made by bending a sheet of warmed material around a cylindrical mandrel. Forticel allowed Sheaffer to begin using injection molding.
One price of the switch to injection molded plastic was loss of the iconic Sheaffer longitudinal stripes. This was offset by the availability of some brighter colors. In my opinion the best color of all the non-striped Sheaffers is Persian Blue. This color was only available from 1948 - 1951. In 1952 Sheaffer introduced the Snorkel in yet a different injection molded plastic by Union Carbide and Persian Blue was no longer an option.
This pen is NOS - New Old Stock. It came to me with the remnants of the original model name stickers still intact. They were clear plastic stickers wrapped around the barrel just below the cap. Someone had covered them with cellophane tape in an attempt to preserve them but the printing was no longer visible and the edges had dried and cracked away. Restoring the filling system confirmed the pen had never been filled. The unit that makes up the inner barrel and grip section is pristine and as transparent as the day it was made. The only flaw is a bit of staining from the cellophane tape.
I've restored the filling system using modern, synthetic rubber parts that will last decades. And I guarantee my work for at least one year provided you strictly avoid Noodler's ink as it will melt the rubber and stain the pen.
The nib would probably have been classed as a medium or medium-fine when new. It compares with a modern, western fine. It has the turned up point that Sheaffer is famous for using. I've adjusted the nib to write a wet and smooth line. Conical Triumph nibs are very stiff so there is no line variation.
Length Capped - 128 mm (5”) Uncapped - 108 mm (4.25”) Posted - 143 mm (5.6”). Diameter Cap - 12.8 mm (0.5”) Barrel - 11.4 mm (0.45”)