There were a number of companies that made porcelain stations, you need to either determine who made the station, or better yet post a picture of the station and pictures of the panels you are looking for. Remember Standard only made oil products, they purchased the stations.

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