I got this kit the other day at a consignment store in my local town. The lamp is dated 1958 and the stove is dated 1960. The spare parts (vaporizers) are still sealed. The 'used' pre-heater wick is broken. There was a bit of kerosene still left in the tank of the lamp, but the stove is empty. When I checked the tank of the lamp, air was released, I suppose it holds pressure. The mantle on the lamp is still new. Ken in NC