This is a very nice and rare design for a signal box in h0 scale. It is made of wood ,paper and iron.

I have never seen one , also not on the internet , and I believe this is the only one in existance today.

It has no mark on the underside but it could be from as early as 1950.

It is made after an original signal box in Utrecht designed by the architect Sybold van Ravestein in 1938