Mullard valves boxes are familiar to folks. The NOS valves and the modern re-creations are in blue boxes with black /pink. The NOS ones will have a price on the box – typically “11/- + PT.”   Yes this is the old shillings The valves were also packed in red and black boxes during the 1960’s too.  These boxes had no prices on them because they were destined for industrial customers and were sold by the […]