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pier magic!

McDyver

New member
some of the many bottles I recovered in about 14 ft of water where a dock was used between 1880 to 1920.
 
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But what are the metal looking disks hanging inside the bottles? Awesome finds!! HH Joe
 
Hi, here's an attempt at explaining the metal things in the bottles. The bottles are soda bottles and are so heavy they sink like a stone even full of air. the metal things have a rubber gasket fastened to the bottom and when the bottle is full of soda the pressure forces the rubber gasket up against the bottle making the seal, and to open the bottle you push in the metal stem quickly and it wood make a "POP" sound. and now you know where the term POP bottle has come from!
 
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