Nail and String original art of the Newport Transporter Bridge

We have for sale an original 1960s nail and string picture of the world Famous Newport Transporter Bridge.

The original piece of art is signed LP ( Does anyone know who did this piece please) 

This unique item is in great condition and should be in a museum.

Condition is excellent.

size 3ft by 2ft 

The perspective is great and it gives an insight it to the Icon landmark.