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If your talking high impedance voice coil they weren't common here in the US. A few of the early paper cone speakers in the 20's were high impedance but by roughly 1930 radios usually had built in low impedance speakers and they usually had a field coil (used as a B+ choke) instead of a permanent magnet.
One oddball case of a high impedance voice coil PM speaker in a US product is one of the car radios (IIRC it was Motorola) for the Chevrolet Corvair. It used a 40 ohm voice coil speaker. I know because a friend owns a Corvair and had to switch radios because that speaker was bad and he couldn't source one.
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