Congratulations. That is a cool find. We have several nautical experts. They will chime in and supply great info, I’m certain. Welcome to the T Net forums. You’re in the right place and off to a good start.
The Homewrecker says it was made after 1820 because it has the iron crossbar. This bar that folds for storage would appear to be a more modern adaption. Potter also says anchors with heart-shaped flukes were usually made before 1700. I'm guessing this one is an exception.