Puckerings has dated this piece to the 1930s.
The top of the cap has a central dimple, the underside also having a dimple.
I wander if this example was made for the French market as it has "M&W Fabrication Anglaise" (Made In England) on the underside.

The top section removes to reveal an ice breaker inside. An Art Deco example dating to c.1930. Excellent condition measuring 7 1/2" tall with a diameter measuring 3 5/8".
Item ID: 40920
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Puckerings has dated this piece to the 1930s.
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