Using an oscilloscope and a waveform generator, I get the inductance of this little 12v permanent magnet motor somewhere between .45 and .91 uH. Can't get closer than that because my waveform generator gives me steps 20KHz, 50KHz, 100KHz and so on.
Does this value sound reasonable?
The only specifications I can find for this motor are:
10,500 rpm at 12v with no load
3.8A stall current