This is an original NaviStitch unframed piece. This mermaid is swimming off the Cornwall coast near Padstow.
 
Taken from Admirlty Chart L(D1) 1156 - Trevose Head to Hartland Point, dated 1982.  Hand-stitched onto an original used Navigation Chart. Any pencil marks, creases or stains are part of the natural patina of a used chart, this is a very clean example but does have fold lines.
 
The external mount measurement is 14x11 inches to fit a standard frame size. This will be sent to you unframed for you to frame yourself.