Authentic Ferdinand Georg Waldmüller? Painted on Copper?

I came across this painting on a large copper sheet of metal at a local thrift store here in Palm Springs.
It is no doubt very old and damaged but is it authentic?
It depicts in Gorgeous detail the famous painting by Ferdinand Georg Waldmüller of a Peasant woman with children in window.
Someone tried to “clean the signature and totally removed the paint from the copper.
The back has a very authentic label but is difficult to read.
ANY info from a person knowledgeable in this field is greatly appreciated.