Just tidying up some blasts from the past (including some very ancient ones), largely for the benefit of anyone searching the site for information.
Nice works. The signature is “Meyer-Gasters”, which is for the German artist Klaus Meyer-Gasters (1925-2016), best known for pen and watercolour sketches of animals and plants. Those are prints, one titled “Two Loving Brown Birds”, one titled “Giraffe Head”, and one that I don’t know.
There’s a whole bunch of vintage offset lithograph prints of his works from the 1970’s/1980’s at the link below, including the birds and the giraffe (if you click on “older posts” at the bottom), typically priced in the $30-$50 region:
https://kerrisdalegallery.com/?s=meyer+gasters&submit=Search