unmounted mint Block Larger Than four 1930 (c.) a sheet (split into three blocks) of 144 blue se-tenant labels (all different) depicting famous racing drivers of the period covering 1903-30 on gummed paper watermarked "Harrison & Sons, London", headed "CASQUE'S STAMP COLLECTION OF FAMOUS RACING DRIVERS" in top margin, issued by "The Autocar" magazine to raise funds for the Weybridge Hospital/Brooklands motor ambulance and a winners trophy; unmounted mint, some perfs. split or short and a few tiny stain spots, still a fine and seldom seen item