Used Grayhill Rotary Switch 12 Pole 2 Throw or 12P2T.  Tested and Confirmed Working.  71B30-02-6-2S

These have Shorting Type Contacts = Make Before Break. Be certain this will not cause undesirable operation in your circuit.

Attempting to decode one for this part I came up with:
71B30-02-6-2S  Series 71 1/4" Shaft Standard Solder Lugs 30 degree angle of Throw 2 Deck 6 Poles per Deck Shorting and 2 positions. -unverified information.  

High Quality Made in USA Industrial Switch with Gold plated terminals.  Don't confuse these with cheap phenolic open deck style switches.  These are real ones.

115VAC 250mA or 30VDC max.  Rated for more current with reduced cycle life -see datasheet for info.   MSRP new ~$28

Scuffs Scratches Marks Oxidation and Wear.  Comes with a mounting nut and a washer.  May have large or small pattern control nut.

Datasheet pages shown are NOT included shown for reference ONLY.