Most of the answers to the questions you are posting cannot be answered. This type of information was for company records even if it was even noted. Model numbers/serial numbers can be found in the Blue book, but not this information.

Also, the Bowser company closed their doors around 1960. In those days most company records were thrown in the trash rather than given to the local historical museum.

Jack Sim


Author, 1st & 2nd editions of Gas Pump ID book, 3rd edition is now available at www.gaspumpbible.com
Air Meter ID book also available