Mine being pretty much identical, here are the numbers:
magnetic base:
Magnetic Base being part of cat no. 1551
Type 1 Volts 120
Serial No. B1040226
Motor numbers on the tag on the motor:
Black & decker No. 1551 Type 1
3/4 inch Magnetic Drill Press Volts 120, Amps 10, RPM 375
Serial No. 81040021
I hope this is useful to you, great drill but heavy.
Grant