Hi I have a Vintage Gas Boy Power Operated Pump 50 PSI Max for Petroleum Products. The Serial # 775922. The model number is 1820 it will make a great collector item not much history or evenif itwill work. It will require higher shipping charge do to the weight and size of the unit the shipping charge will be $ 50.00 Have any questions feel free to email me I will try and answer all questions thanks Mike.