Briggs & Stratton WM Model Antique Gas Engine Motor. I attended an estate where the man repaired engines and many of these labeled on a shelf in a work shop.I have no idea about them. This item is in the category "Business & Industrial\Light Equipment & Tools\Stationary Engines\Parts". The seller is "chocolatepoodleparades" and is located in this country: US. This item can be shipped to United States.