LOT-P26. For your consideration is an exceedingly rare and historically important 1st Day of Issue HRH Princess Caroline of Monaco manuscript hand-signed Photographic Photo envelope of HRH Princess Grace Kelly of Monaco. Measures approximately 6.5" x 3.75". Signed at lower center margin in black ink. Envelope is original. Condition is original. Photograph of Princess Kelly featured in genuine natural silk cachet. Signed / stamped / postmarked March 24, 1993. Guaranteed original and authentic!