Bottle of enamelled stoneware hot water bottle

Old bottle in glazed stoneware - vintage hot water bottle in shades white - gray - blue, lots of charm. Original porcelain cap. In its juice, no breakage. The enamel is slightly "cracked" on the upper half of the bottle (surrounded in one of the photos). Some rubber remnants of the cap. Dimensions: height: 31cm, width: 9cm. Weight: 1.3kg.