2 Vintage or Antique Wooden Jigsaw Puzzle circa 1940's or earlier w/ Music Theme

My mother played with these wooden jigsaw puzzles in the 1940's in Germany at her Grandfather's house. She remembers they were already old at that time.
Unknown maker, no box or identifying marks to b e found .
Puzzles are approximately 7" x 10" and wooded pieces are 1/8" thick . 1 missing piece, fair condition