Well I recently bought a little B and after your help identifing its birthday i've started to do some work to it. It's a '41 with electric start and 6 volt. It has a hydralic pump and pto with a double pulley. I got it with a flail mower (which is for sale). All four tires are 95% with little dry rot. It was dead in two cylinders but after freeing up a sticky lifter and replacing two push rods, it runs like a dream. I love tinkering on my first tractor that is about twice my age.