Here is a vintage children’s Valentine greeting card with an illustration of a cute girl opening a treasure chest that is filled with ruffled hearts. The message is: A Valentine To Say “HI!” 
This adorable sketch of a girl holding a heart is from the inside of the card. 
Here is the message from the inside of the card as well. 
Click on images to enlarge.
Julie is a vintage enthusiast and a Photoshop addict who collects old books and new recipes.
Contact her at: theolddesignshop(at) gmail(dot)com
I love your retro Valentines! Thank you!