"½d., 3d., 6d., 1/-" written in vignette space and crossed by pen stroke and manuscript "Cancelled", all in red ink. Unique. Photo" /> Proof 1935 Silver Jubilee Waterlow die proof of the frame with blank value tablet in black on card, marked "2994 O.K PROOF" with manuscript<I> "½d., 3d., 6d., 1/-"</I> written in vignette space and crossed by pen stroke and manuscript<I> "Cancelled"</I>, all in red ink. Unique. Photo | Christie's