RY-184 boxed RPO "REGISTERED / WEST EXT." two backstamps (one perfect strike, the other missing only a few letters) on cover with 3¢ Small and 2¢ RLS tied by bullseye cancels from Luther, Ont (JA 30 77) to Toronto, paying 5¢ registered letter rate. RF G, rare. This is the EARLIEST RECORDED STRIKE. Ex Harrison on his exhibit page (lot 595 in Lee sale). (Image)