Jones engine or Acme Sucker Rod engine which are both pretty much the same thing. It appears to be in nice shape. I think the bolt for the drive may be new. The packing gland has a chip out of the one side. That could be fixed or it would work fine as is. Check out the pictures and see if you need it. If you measure from the base to the center of the mounting pin while the piston skirt is even with the packing gland that is 27. The piston is slightly under 2 in diameter. The pump is 10-5/8 tall measured from the bottom to the top of the packing gland stud. 1 pipe inlet and outlet. Mounts with 2 holes about 4-1/2 apart on center. 25 lbs actual weight before box and packing material. Thanks for looking at this listing! If you want to check out my reputation and such please feel free to google search my name. My name and address is. 14316 State Route 281. If you can find a way to talk to me with your voice you will almost always get a quick response. If you message me please try not to sound like a caveman. I have terrible grammar myself so I understand but sometimes it is very difficult to comprehend what some people write. If I make a mistake on my measurements or you feel something is not as described please let me know and I will try to make it right. I think most all of my customers with a normal level of sanity are happy. I think most people would agree that I do an extremely good job of packing items so I guess it’s worth the wait. Check out my other items. Be sure to add me to your favorites list. The item “S. M. JONES ACME WATER PUMP OIL FIELD ENGINE Old Hit and Miss Gas Engine” is in sale since Thursday, January 31, 2019. This item is in the category “Business & Industrial\Light Equipment & Tools\Stationary Engines\Parts”. The seller is “hitmissengine” and is located in Holgate, Ohio. This item can be shipped worldwide.