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Help me identify a vintage electric component

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bsfeechannel:

msuffidy:
Looks like a prisoner wood carving from Norman Cross Prison.

Cyberdragon:
If we go with the battery theory, it could be from a ballistic shell or missile, those have seperated electrolyte batteries that start from G-force when fired to activate instruments.

BrokenYugo:
Mountains are sometimes shelled for avalanche control, but I kinda doubt they're using electronic fuzes for that.

Cyberdragon:
US army BB-52 36V lead acid radiosonde battery, 1946

https://www.ebid.net/uk/for-sale/36v-battery-ready-for-use-lead-acid-bb-52-bb52-us-army-1946-radiosonde-ml-128-150323075.htm

EDIT: yes, it's from a balloon.

https://radionerds.com/index.php/BB_-_Storage_Batteries#BB-52

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