Two different butterflies.
One butterfly has ruffled hind wings and the other has pointed hind wings.
The butterflies antennae are also different in each drawing.
The butterflies are from a pattern page of vintage / antique jewelry 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
