Mystery Keys - Please Help Identify

[Mallarme]

Collectors, I bought a collection of European keys -- everything from Gothic on up. But there are two mystery keys I cannot identify. The first is an ornate brass hollow key with a chain. On eBay someone (antiquezar) called this a "spy key," but what self-respecting spy would be caught with it? The only other possibility is a key in the Vincent Eras book, p. 56. It has a cross on the bit. The second is a strange key, brass bow and iron shaft, with what appears to be the image of a dancing woman on it. Please help! Thank you. Robert