https://www.google.com/search?client=firefox-b&ei=ku4BXPCEKKjqjwTz57qIBw&q=+charlie+McCarthy+clock+By+Gilbert+Clock+corp.&oq=+charlie+McCarthy+clock+By+Gilbert+Clock+corp.&gs_l=psy-ab.12…47797.70308..76052…0.0..0.377.5080.1j30j1j3……0….1..gws-wiz…….0j35i304i39j0i8i30j0i22i30j33i22i29i30j33i299j33i160.kSPEXCoa9wM

Have you looked here ?? Its probably been wound too much !! Look at the liveauctioneers listing above,, your square case clock picture was used on the box !! They made several types of cases !!