Keyring with red bicycle charm and brass keys

I lost my keyring yesterday around 3pm near Windmill Island Gardens in downtown Holland, by the parking lot near the big windmill. It's a circular brass key ring with two house keys and a silver car key, plus a small brass skeleton key. There's a red enamel bicycle charm on it and a green circular sticker with the initials 'MJ,' and the ring has a little wear with a scratch along the edge. This set is really important; it's my home key and bike lock, and I'd be grateful to get it back.