United States 1967 Two Rocket mail Flight covers, Flight XVIII flown by Rockets Nos 1 & 2, each with perf NASA label with error (th Year omitted) plus corrected label, covers numbered & signed on back
United States 1967 Two Rocket mail Flight covers, Flight XVIII flown by Rockets Nos 1 & 2, each with perf NASA label with error (th Year omitted) plus corrected label, covers numbered & signed on back
