Gary Stephenson wroteChatwood book, nothing in it I can see to help date it.
Gary, the only approximate date will be from the illustration of Chatwood’s Harlescott Village and Conservation which I think was dated about 1928.
The Chatwood CB Special.
These were Specials for the Commercial Bank of Scotland. The radius on the corners was also a feature of the Special Diamond at that time. The top pivot carried an oiler which did little to prevent these doors binding. The lever handle near the bottom operated the hardened shutters in the keyways secured by the dial lock.
Quite a few Chatwoods, mainly Standard Treasury Quality. were attacked with high explosives in Central Scotland Banks in the 1950s. All resisted as the detonations did not destroy the locks due to the shutters. Distortion of the keylocks did take place however requiring full access to the locking points and considerable power in retracting the boltwork.
In the above example the safe was returned to Works to open. In Glasgow the affected Banks - British Linen Bank, Bank of Scotland, persuaded me to remove the safes to our workshop accompanied by a Cashier who was given a ringside seat. The Spiegeleisen ferro -manganese casting was completely torch and drill resisting and had to be chopped out with a variety of chisels. Then the boltwork and door released using a 10 ton hydraulic jack. By the end of the day the cashier was released as well as the payrolls.
Spiegeleisen (mirror iron)
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