siemens: M57 (M 57); Kammermusik-Schatulle

I'm kind of curious. I noticed on ebay recently that there was an M 57 for sale but looking at the inside photo's of this item I noticed it had the same speaker assortment as the H 52 (1 Large speaker in the middle and 1 tweater on each side of the middle speaker). Were there more than 1 variation of this model available?

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There are always two large speakers on the  inside of the M57, due to the push-pull amplifier.
There might be some wrong photo’s on ebay.
Kind regards, Eike Grund

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