FRANCE (1960) La Bourboule*. Die proof in green signed by the engraver COMBET. La Bourboule, in the volcanic Auvergne region, is famed for its thermal springs. Scott No 966, Yvert No 1256. Beautiful!
AVAILABLE AT $160
FRANCE (1980) Heat arising from Earth*. Die proof in violet signed by the engraver HALEY. International Geological Conference. Scott No 1711, Yvert No 2093.
AVAILABLE AT $160