Antique German Junghans A13 Wall Clock Early 20th Century Movement Working Order

This antique German Junghans A13 movement wall clock from early 20th century in a beautiful carved case. Antique key,  the dial in art Deco style with Arabian numerals. Some decoratives details are lost, please see pictures. It’s in working order, with gong but not tested, requires professional cleaning, oiling and regulation for better work.