Development of the FP-6000 was completed in late 1962, and the first production machine was delivered to the Federal Reserve Bank in early 1963. The prototype machine was later greatly expanded into the largest FP-6000 installation and sold to Saskatchewan Power, the provincial electrical supply crown corporation for use in performing both engineering calculations and customer billing simultaneously. From there additional sales proved very difficult. Over the next year they sold one to the Defence Research Establishment Atlantic, in Dartmouth, Nova Scotia and the other to the Toronto Stock Exchange (TSX). The later machine allowed the TSX to become the first computerized exchange a few years later. Sales attempts to the City of Toronto to drive the world's first computerized traffic control system failed, as did a sale to Ontario's Treasury department.