Digital BW, The Print

Unfortunately it's coated on both sides I think the rear is coated in 
order to prevent excessive curl, but it's not coated to the full 
standard (so doesnt print very well...)

Without it being in the box with the interleaving, I could suggest 
sacrificing a small amount and actually printing a bit of black text 
on it using a standard rag/watercolour setting on the printer. The 
right side will look good. The wrong side won't look quite as good 
and should blur a bit...

otherwise, the correct side is the smoothest. the wrong side has a 
slightly more pronounced texture - but it's quite hard to tell