This butterfly looks a little bit like an angel.
This a wonderful piece for making patterns for vintage and antique ephemera designs.
Source:
RIJKS Museum
Museumstraat 1, 1071 XX Amsterdam, Netherlands
©: listed as Public Domain with CC1.0 license
More information about CC1.0 can be found here:
https://creativecommons.org/publicdomain/zero/1.0/deed.en