In 1964 Burundi issued a series of 7 stamps featuring native dancers and drummers. The selvage’s of this series of stamps was inscribed: “Exposition Mondiale De New York” – New York’s World Fair.
The stamps exist in a number of listed varieties:
a. 50c – 20fr, Gold Background – Perf 14 (Scott #88-94)
b. 50c – 20fr, Gold Background – Imperf (Noted, no number given)
c. 10fr, 15fr, 20fr – Gold Background Souv. Sheet of 3 (both Perf and Imperf) (Scott #94a, Imperf sheet not listed)
d. 50c – 20fr, Silver Background – Perf 14 (Scott #88a – #94b)
e. 50c – 20fr, Silver Background – Imperf (Noted, no number given)
f. 10fr, 15fr, 20fr – Silver Background Souv. Sheet of 3 (both Perf and Imperf) (Scott #94c, Imperf sheet not listed)
Going through a small pile of these that I had, I ended up with full sets of Gold Background, Silver Background, and Silver Background Imperf. I also found a number of interesting color shifts / varieties
And – although not in my collection currently, here is an image taken from eBay of what the Souv. Sheet looks like: