This violin is one of 4 old and famous violins in the collection of my 80-year-old friend. Nightinggale Spezial marked on top of back plate. My old friend has been carefully guarding and playing with it.It has not cracked and is in good condition. The sound is beautiful and wide. To listen to a short video of my old friend playing it on. It may be a copy, wasn't actually made by David Techler Litano.
But it still is an antique Germany or Austria violin.