[78-L] Grooved video discs 78rpm resp. 1500rpm (''mechanical TV'')

[Benno Häupl]

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Scottish inventor John Logie Baird devolped a system using grooved discs 
that could reproduce moving pictures of 30 lines. Has anybody here seen 
(or own) a grooved video disc made according to this standard (around 1928)? 

BTW, currently there is on ebay.de a Telefunken/Decca video disc player 
up for auction, with some 70 discs. The grooved records turn at a speed of 
about 1500 revs/min.  It dates from the early 1970s. It fascinated me even 
when it was launched: you track grooves with a diamond needle and you get 
a color picture and sound! 

Only about 3,000 copies were sold, plus a TOTAL of about 30,000 discs! 

http://www.ebay.de/itm/RARITAT-TED-Bildplattenspieler-Telefunken-TP-1005-1975-VINTAGE-/290784965248 

So, does anybody on this list own a grooved Baird disc that runs at 78rpm? 

Benno
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