This is a French Parker Vacumatic, in opaque black. It sports a simple Parker 18 carat nib and is a speedline filler. The barrel markings are around the barrel just below the threads (and reads 'Parker Made in France') and not along the length of the barrel as is seen usually. The nib itself is soft but feedbacky (may need some adjustment) and has a good amount of flex.
I'm not sure when it was manufactured since the speed-line filler would indicate latest during the war which seems unlikely. The shape of the pen itself reminds me of the later Duofold NS. Is it possible that it dates from the late 40s or early 50s? There is a squarish dot between the words 'Parker' and 'Made in France'. I cannot make out if it's a date marking or a blemish.
A very unusual and unique pen for me!
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