I would be very careful trying to jump start a Model A. It is possible to shear a rear axle key which in turn damages the axle key slot in the axle shaft. This is a very nasty and expensive repair.
I recently could not start my Victoria and wanted to move the car from the street to the garage. I did not have a spare coil which turned out to be the problem. If you remove the spark plugs, you can very easily use the starter to drive the car a short distance.
My engine has only about 2500 miles on it and has excellent compression. I know I have weak arms and I could not move the engine with the crank. Ed