Tokheim made so many different 39s that I tried to explain what they are on my website. Go to this page: http://petrolianacollectibles.com/tokheim%20pumps.htm

Click on Tokheim.

The click on any one of the 39s listed and read the explanation.

The 10 46 in your serial number indicates your pump was made in October, 1946. It was one of the first clock face tall 39s made after the war.

I have manuals available.

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