When they retire? Country antique dealers...
Rock collectors prefer to be called 'Petrologists.'
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headphone jack
Stamp collectors are call philatelists. Coin collectors are called numismatics.
I have never heard of a junior war medal collectors society. But there is a group called Medal Collectors of America.
You put the headphone in your ears.
Antique dealers
You can use it like this: I have a headphone.
Headphone Injuries was created in 2006.
To see or buy an original headphone go to an accredited shop when you want to buy your headphone.
lucky feather keepers