Trying to find some information about this Geo S. Parker Vacumatic Fountain Pen. The barrel of the pen says it was Made in America, and has the number 6 surrounded by 3 lines, one line on the left, and right of the 6, and one line underneath the 6. The nib, or point is gold, and says Parker USA with the number 6 underneath USA. The cap has a silver ball with gold trim on tip.
If there is anyone out there with any information on this pen, your help would be greatly appreciated. Thank you very much.