Old school ring-pull device

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I noticed this on the top of a can of 7-Up. I was at school when the UK moved over to non-detachable ring-pulls on drinks cans. Prior to this the playground and pavements used to be littered with these little aluminum shards.
Old school ring-pull
Given Hong Kong’s culture of charging for plastic bags I was surprised to see this type of can design.
Old school ring pull