Crescent Electrical Installation Corp. was the successful bidder for electrical work on the construction of a new school. The work was substantially completed in September, 1972, and on November 15, 1972 the board of education approved the "Final Certificate" issued by its director of the bureau of construction and authorized final payment. Payment under the certificate and resolution apparently was made shortly after December 12, 1972. Thereafter the board issued several change orders increasing the contract price and on May 23, 1973 certified a total increase in the contract price of over $72,000. On June 13, 1973 Crescent filed a notice of claim seeking the contract balance, extras, and damages for delay in consequence of the boards alleged breach of its obligations under the contract. The first trial terminated in a mistrial on consent of the parties.
