I heard they asked for a slow one.
[ATTACH] A scarcer block for the B series. Also 2 different A's. The left one is an Early A, the right is Late A. Notice the position of the...
http://www.uspapermoney.info/serials/f2013_b.html This should be what you're looking for.
I bought mine about 30 years ago. The dealer called it a Rackateer Nickel back then, too.
I also have one. [ATTACH] [ATTACH]
The batteries were worth more than the detector.
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