I have listed an excellent, restored M-151 on Ebay for a friend. This is a nice one with matching trailer and extra parts. Ready to go, runs well and all original including 24 volt electrical system. He says it is the Officers Model. He has a very low reserve in my opinion so check it out if you are interested.
remove the extra @ to email me. I don't know anymore than what I put in the ad so if interested contact the owner. His phone number is in the ad. Thanks guys and good luck. Ken