On 17/08/2018 16:17, Harry Bloomfield wrote:
The Natural Philosopher used his keyboard to write :
it is unless used in an appliance with a metal chassis that is
connected to IEE socket earth...

Sorry, no it is very dangerous indeed. Supposing someone used it on an
appliance which required an earth connection?

The OP said moulded on plug - was it even fitted with a fuse and were
the plug pins sleeved?

Yes and yes, it looks to be perfectly normal.

Cheers
--
Clive