Carbonia DRGM Alcohol Trench Candle

Carbonia Asbest Sternlicht DRGM alcohol fueled candle or 'trench candle' appropriate for WWI or WWII. Original unused stock. They are empty. I believe they could be refilled and used, but I am not sure how to open it. The top is mated to the bottom with some fairly deep dimples.The price is for one.All are in good condition with storage wear. Some appear to be a bit darker than others. It is just a variation in the the lacquer coating.