This is a genuine Prestolite 12V Solenoid.  Part #15-139 (SAS-4208). Single pole, Continuous Duty.  Normally open.

Max pickup volts: 9
Rated Current Resistance Load: 100 amps
Coil Resistance: 16.3 ohms
Life in Cycles at Rated Load: 50,000
Dielectric 60 Cycles V RMS: 600
Mounting Type: flat .28 slot
Mounting Centers: 2.32
Control Terminals: (1) 10-32
Load Terminals: 5/16-24
Appox size: 3.33 x 2.25 x 2.33

Box style may vary.
NOS in original box!!  Will combine shipping with multiple purchases!  Will ship internationally using Ebay's Global Shipping Program.  Please note Ebay will charge and collect sales tax based on your state.