Blue Phosphor. The 3d pane has a Broad Band. Perfs slightly trimmed on one side. Also phosphor mis-placed on the 1 1/2d pane. It is just showing on one side so does not qualify as one band. GOOD PERFS
N4p 2/- Booklet April 1961 Phosphor BROAD BAND on 1d
Sale!Original price was: £72.25.£66.47Current price is: £66.47.
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