I bought this off ebay (the black pen) assuming that it was a 45/51 Frankenstein pen. As you can see the pen is quite a bit smaller than a 51 or a 45 the respective red pen parts belonging to a 51 and 45.

The only marking say lady however it doesn't look like any of the lady pens i can find and on Google images so I was wondering if anyone knew what i bought. The guarantee says it was purchased in 1971.


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