1c Nebraska (669). Planty
#9B, Emeigh cachet in Red, Green and Blue on cover with pair tied by May 1,
1929 Washington D.C. First Day machine cancel, very scarce cachet,
only the second we have seen (Image) 
2c Nebraska (671). Tied by
unofficial First Day May 1, 1929 North Platte Nebr. machine cancel
on cover with multicolored advertising from North Platte "York Implement
Store", rare and a great exhibition item, this is the first of its type we
have seen for any value, rarely does one see Kansas-Nebraska FDC's on
advertising covers (Image)