A replica CH23 Chair will not have the original's signature cross-shaped joints visible on its backrest. Also, poor weaving and cheap synthetic cord are tell-tale signs of a fake. This is never the case on a genuine CH23. An authentic CH23 seat will feature a neat and tightly woven, high-quality paper cord. Lastly, the genuine CH23 features a label displaying the Carl Hansen & Søn logo, the chair’s serial number and Hans Wegner's signature underneath the seat.