6p Ultramarine, Die II, Small “OS” (BW 18ba/zc).
Bottom margin JBC monogram block of four,
barest trace of hinging in top pair and in sheet selvage, bottom stamps Mint N.H., marvelously well-centered throughout, bright fresh color
VERY FINE. A VERY RARE JBC MONOGRAM BLOCK OF THE SECOND WATERMARK SIX-PENCE ULTRAMARINE, PARTICULARLY WITH THE SMALL “OS” OFFICIAL PUNCTURES.
We are aware of only one other similar block that was once in the Hardy collection
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