NSR = 'No smelter required'?

STRICTLY Boardroom owes more than one bottle of Cape Mentelle – and a chicken vindaloo too.

NSR = 'No smelter required'? NSR = 'No smelter required'? NSR = 'No smelter required'? NSR = 'No smelter required'? NSR = 'No smelter required'?