REVENUE MEMORANDUM CIRCULAR NO. 70-2006 issued on November 20, 2006 notifies the loss of one (1) set of a previously cancelled BIR Form No. 1954- Certificate Authorizing Registration with Serial No. CAR200500040463. Said form, which was reported lost by Ms. Alicia B. Cacdac of RDO No. 50, Revenue Region No. 8, Makati City, has been cancelled and all official transactions involving the use thereof are considered invalid