Parker Vacumatic ID

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I have scoured all of the Parker ID websites that I could find trying to nail down the model and date of this pen. The Vacumatic plunger is plastic which I understand dates it to WW2 and beyond. I see the nib called Golden Web, with the golden arrow and PARKER and USA and 51 stamped below it. Both cap and barrel ends are jeweled. However, the clip is not arrow shaped, but is stamped PARKER with the letters arranged vertically from the top. The longitudinal lines are black alternating with marble brown/green. The capped pen is 5”