Hello.  I am a Franfurt, Germany, based musicologist specialising in
Irish musical history (see http://www.axelklein.de ).  I recently published
a book about the O'Kelly family of Irish musicians in 19th- and early
20th-century France.  One of them was the composer and pianist Henri
O'Kelly (1859-1938) who recorded more than 50 Pleyela rolls in Paris
between about 1907 and 1923.

I recently bought one of O'Kelly's Pleyela rolls on eBay.  The only
working pianola in my neighbourhood -- in fact the only working model
in the German Federal State of Hesse -- is a Ducartist model (by
Philips) at Frankfurt university.

I am so curious to hear the Pleyela roll.  Can you tell me whether
Pleyela and Ducartist are compatible?  Both are 88-note systems,
28.7 cm wide [11.25 inch nominal], but I don't want to destroy my
precious roll.  Thanks for letting me know.

Axel Klein
Frankfurt am Main, Germany
http://www.axelklein.de/ 
axel.klein@gmx.org.geentroep