Padlock and Key is a range of locks and keys made by Yujin, and are sold only in Asia. They depict engines protruding from a shed with their name above them, and include a gold key.
- Due to the engines protruding from the shed, their wheel arrangements are not accurate.
- Murdoch is missing his name plate.
- The gold key has a figure on the end resembling Sir Topham Hatt.