Guitars and Lutes...Love with Strings Attached

Dear Valentine I can't HARP too much on my love for you.

3 7/8" x 5 1/4"
Made in USA
circa 1940s, 1950s
by A-Meri-Card
marked 116/123

To One I Love.

mechanical figure plays 4-stringed instrument,
a ukelele?
2 3/8" x 5"
German-made

Valentine Greetings

4 3/4" x 2 5/8"
circa 1910s-1920s
made in Germany