Commonwealth Period International Reply Coupon Seldomly seen Internatrional Reply Coupon. The last time I saw one was in the early 1980's - store of Rogelio de Jesus. He offered to me the item for 200.00 pesos but found the asking price too stiff. At that time 200.00 pesos was big money. The surcharge from 18c to 24c indicate that this IRC must be of the 1938 period.