iPhone 6S 64GB in Space Grey.

Screen: small day-to-day marks can only be seen when the screen is off.

Top: immaculate.

Bottom: no marks can be seen from a POV distance.

RHS: no marks can be seen from a POV distance.

LHS: no marks can be seen from a POV distance.

Back: tiny marks can only been seen under close inspection.

The Buy Sell Technology Ltd. testing procedures can be viewed here.