Short Wave Crystal Radio Set 1960s Vintage Radio

Description

Some kind of homebrew Crystal Set radio.
Looks like it came from a kit.
Label on the front says "3.0 MHz THRU 14 MHz" indicating short wave reception.
There are several taps on the small coil that can be connected with the blue wire with an alligator clip. The large coil slides back and forth on the coil form to change coupling between the coils.
A working crystal diode is soldered in the circuit.
Great item for the experimenter.
You figure out how it works.
Very good used condition.
All items carefully packed.  No returns unless not as described.  If there is any discrepancy, contact me first and I will try to make it right.
See my other items.
Thanks.