Canal Zone, Mint Postal Stationery, 1907-32. 17 entires; mint envelopes #U1 printed address; U6, U7, U8 (UPSS 9, knife P-3); U9 (UPSS 10, Knife P-2); U11 (UPSS 29, Wmk 42 with backwards "9"); U17 (UPSS 59, Wmk 47A, Die F), also U8 (UPSS 8, knife P-2, thin & thick "1" varieties); U8 (UPSS 9a on kraft paper (Scott unlisted)); and U9 (UPSS 11, Knife P-3), two U12 (UPSS 31, Size 8, Wmk No. 25), UC1-UC2, UX1and UX8; Scott cat $1,080+. Scott No. U1//UX8  Estimate $250 - 350. $0