Sealed Beam Bulb (12V)
CTPA-70230232 Replacement Part to Fit:  Allis-Chalmers For Models: FITS SEVERAL MODELS Used in a 28A 9, 28A 18, 28A 408; 4 1/2" DIAMETER, 2 SCREW TERMINAL  Price:  $8.47  Buyers Club Price:  $7.62