Firstly, you cant be sued for fact. Only spectulation.
(I dont think we need to name and shame the organisation concerned, merely reading this forum topic will be enough to highlight awareness).
There is a debate here as to what constitutes 'new', one would think a 'new' tank would have 2 years (or thereabouts) until the requirement for a hydyo, even though it may be unused.
When we consider the implications, a cylinder that has sat around in a warehouse for a year and a half, could be considered to be 'old stock' and buyers need to know what to look for when buying a cylinder.
Last Hydro Date;
Last visual date (if any);
painting of tank;
Price of tank.
I cant think of anything more relaxing, than being in the downunder, breathing some nice clean fresh filtered 21% nitrox.