Taunton 3d Postage Due

The sender of the envelope below attempted to use a bisected 3d stamp to pay the 1½d postage.  The result was postage due of double the deficiency or 3d, while the bisected stamp is carefully not cancelled.

So not only was the 3d stamp wasted but the recipient also had to pay 3d - total cost 6d for 1½d postage.