Engraved stamp - FDC France WORLD COOPERATION CONFERENCE ROYAN 1968, Signature HALEY (TG68-F1554D)

No. TG68-F1554D: FDC Envelope France 1968 "5th World Cooperation Conference - Audiovisual Teaching of Modern Languages, United Cities Royan 1968"

- Illustration: Engraving "Royan Congress Center (architect Claude Ferret)" by Claude Haley, with authentic signature of the engraver

- Postage France: 0.40 francs "5th World Cooperation Conference Royan 1968" (Yvert 1554)

- Stamp designer and engraver: Claude Haley

- Illustrated slogan cancellation: Royan "City of Congresses" 13.04.1968 (First Day of Issue)

- Authentic signature of Claude Haley, designer and engraver of the stamp

Beautiful FDC envelope, hand-signed by the artist. Rare!