They were mostly of 2d. In recent years their use has been revived by the Talyllyn Railway, the privately operated narrow gauge line in North Wales, who have issued several attractive stamps for the purpose. Some countries had issued charity stamps without postage value but these were to be fixed on every article of posting during the particular period of time e.g. refugee relief stamps of India. Many postage stamps are also valid for revenue purpose and are thus inscribeed. In used condition such stamps should be collected only with a postal cancellation.
Copies fiscally cancelled are of little value.