I have purchased a used 21" Exmark trim mower at a local landscape auction in Maryland. It has a Briggs and Stratton 6.5 hp engine on it and is the hand push model. However, the ID tag has been removed. I believe the date of manufacture is 1997 since I bought similar Toro models that look the same to an extent. Also the engine ID indicates a 1997 manufacture date Do you know the model number of this mower so I can purchase parts for it? Thanks.