All things considered I put my top three forward. These are off the shelf ( yep I would also like to see the shelf ! ) free standers not special bespoke one off’s.
I have the sales booklets for these three which shows they were available to buy or at least order from the respective companies.
Era wise we are probably in the mid 1970’s to late 1980’s. Non of that modern nonsense !
Anyway in third place I have :
Chubb Sovereign 6428/21
weighing in at 3.6 tonne/7,940lbs/3,601kgs
In a very close second place I have :
Tann Diamond 82/7024
weighing in at 5 tonne/11,199lbs/5,080kgs
So the one that gets my top vote is :
SLS Gem 6325
weighing in at 6.9 tonne/15,260lbs/6,025kgs
I know its not all about weight but I dont think you can deny that these three are definite giants amongest anyhing ever made in the safe world.