![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiDLiwYNAK8RIf2nMeJ32TpbtAzZosT5dbvPJhtcAQUBG9dWEv1zcKRzn4JbpowkpYcCXdIFBGQxKB2RAhLZau8BLn_Pyn93MKETuX4rVKFGyJS9_nAV11-73h82Ajl2MVk-ZKVOoDrwyQ/s400/spy+pen+1967+older+than+me.jpg)
This advertisement for a "Spy Pen" appears to be encouraging less-than-wholesome endeavors. With a money back guarantee, no less! It seems that one might have to order a "Spy Drill" in order for that pen to work properly.
The ad appeared in the October, 1967 issue of the comic book Strange Suspense Stories.