Posted by David Bird 3 on 11/01/2015 16:53:06:
… on top it has a number 4930-99-960-4547 …
That's a NATO Stock Number – it's a military oil can.
Group 49 is 'Maintenance and Repair Shop Equipment', 4930 is 'Lubrication and Fuel Dispensing Equipment'.
960-4547 is the stock number, the item's unique identity within the NATO logistics system
99 is the Nation Code of the country that allocated the stock number. 99 is the UK, 00 & 01 are the USA. A little humour was sneaked into the system. Australia is 66. That's 99 upside down!
If you want to know more it's on the web. This example is an OILER, HAND probably ex-Royal Navy.
Dave