The information I have from the Tokheim pump company shows that the Model # 34 serial #'s 700,000 to 703,597 were manufactured between 1-29-34 to 12-31-34. So my guess would be that your pump was produced sometime in the fall of 1934. Ron Scobie may have more in depth information and a more exact date.
I should have mentioned that in fact the Tokheim #34 was produced up until the end of 1937 with 12-7-37 being the last day that they were produced with the last pump carrying the serial # 715,089.
[This message has been edited by gasguy (edited 09-11-2001).]