With Valentine's Day approaching, here is a wonderful throwback to cobweb Valentine's Day cards that lovers sent to one another in the 1800s. 💕 The idea was to make a card that appeared to be one thing, but that could be changed to reveal a secret message or image. 💕 When a string was pulled upwards, the paper would concertina and reveal something hidden below – often a beautiful painted image. The image could be a painting of the sender or receiver, or it could be a variety of symbols represe