12. Stamps not wanted may be repurchased by the Commissioners.

When any person is possessed of a stamp which has not been spoiled or rendered unfit or useless for the purpose intended, but for which he has no immediate use, the Commissioners may, if they think fit, repay to him the value of the stamp in money, deducting the proper discount, upon his delivering up the stamp to be cancelled, and proving to their satisfaction that it was purchased by him at the chief office or at one of the head offices, or from some person duly appointed to sell and distribute stamps or duly licensed to deal in stamps, within the period of 6 years next preceding the application and with a bonâ fide intention to use it.