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Jan Rericha - certificates
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Marble musical instruments
 


Certificates

 

Certificate of setting up a Czech record: The first guitar from stone used only for concert performances

Certificate of setting up a world record: Stone boat

Certificate of setting up a Czech record: Stone violin

Certificate of creating a curious product: Stone quil pen

Certificate of creating a curiosity of the year 2004: Stone violin

Certificate of setting up a Czech record: Stone guitar

Functional marble quil pen that writes

Functional marble organ pipe

Functional marble loudspeaker with marble membrane - the first model

Functional marble membrane for the loudspeaker - the second model

Functional marble microphone with marble membrane

Nomination of curiosity of the year for functional stone (marble) loudspeaker

Certificate of the longest marble thread