Hamfest find from a Quasar lab -- Vintage General Radio 106G standard inductance inductor 1.0mH 0.1% at 1 Khz DCR 1.75 ohms, inductance is calibrate-able with the proper equipment which I don't have, because of the adjustments that can be made (photos 4 & 5) I was able to get it to 1.00 mH with my inexpensive multi function tester.  Nice and clean inside, exterior with the usual light wear, no cracks or chips in bakelite, original GR tag replaced with Quasar, , , please see photos.