Maze Door Chain Lock- You may manage to keep someone out, but you could also keep yourself in!
RARE Antique Russian Iron PADLOCK with monogram of the master "1905" "CЛ" LOCK in Collectibles, Tools, Hardware & Locks, Locks, Keys | eBay
400 year old German padlock and key. Gorgeous. Recommended by http://www.hackneylocks.co.uk/
Decorative Metal Lock and Keys
Love this door locking mechanism. Great looking. Functional.
Antique Round Shape hand crafted Screw Type Big Iron padlock Original key
Vacant Engaged Lock - Distressed Antique Brass - gorgeous detailing. Fabulous addition to your en suite bathroom. Buy here https://www.willowandstone.co.uk/ironmongery/vacant-engaged-lock-distressed-antique-brass.php
RARE Chinese Old Style Bronze Carved Big Fish Lock Key | eBay
Antique Split Key Padlock Iron And Brass With Unusual Complex Dual Key
Iron Lock, Heart (yes, that's my heart. But I've hidden the key. And I think I'll bury my heart in that secret garden with the very high walls)