Lot of vintage / antique headphones and electric wood box device TYPE E Dymac

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Lot of vintage / antique headphones and electric wood box device TYPE E Dymac :
$25.00

Vintage / antique Device maker unknown with TYPE E Dymac Headphones x 2 plus another piece. not sure if it is medical or a ham radio or? please see photos as it is untested and no returns -- Both set of headphones are dymac type E with research show the headphones are collectible
rhode Island (which are very hard to come by) and they are in excellent vintage condition. box is 13 x 8 x 9 and everything fits inside. thanks for looking.