Bidspirit auction | 1951 (13 Jan) Centenary of

1951 (13 Jan) Centenary of Geological Survey of India 2a top margin block of 4 Private First Day Cover FDC, New Delhi cancelled - 1951 (13 Jan) Centenary of Geological Survey of India 2a top margin block of 4 Private First Day Cover FDC, New Delhi cancelled, some spots