Auction #94 WORLDWIDE AIR POST STAMPS AND POSTAL HISTORY

1968, Waterfowl Conservation, 6c multicolored, a single with red and blue colors omitted, full OG, NH, VF, a common stamp is included, C.v. $350, Est. $150-$200

1969, Christmas, 6c dark green and multicolored, light green color omitted, block of ten (5x2) with straight edge at left, full OG, NH, VF, C.v. $300 as singles, Est. $100-$150

1969, Christmas issue, 6c dark green and multicolored, inverted black Atlanta, GA pre-cancel, top sheet margin plate No.31176 and 31128 block of four, full OG, NH, VF and scarce multiple, a common pre-cancelled Atlanta, GA block is included, PSAG certificate for block of ten, this block was at right, C.v. $2,000++, Est. $800-$1,000

1970, Christmas issue, 6c multicolored, three side margin horizontal strip of ten, top part (plate No. 31939, 31940, 31941) of a transition sheet with strip of three on the left has omitted black offset color, while 4th stamp at left has omitted it partially, full OG, NH, VF and scarce multiple, C.v. $1,200++, Est. $500-$600

1973, Progress in Electronics, (15c) multicolored, a single with black engraved color omitted (all inscriptions and denomination), full OG, NH, F/VF, C.v. $850, Est. $350-$400

1974, Liberty Bell, 6.3c brick red, horizontal imperforated pair of coil stamps, pre-cancelled ''GARDEN CITY N.Y.'', full OG, NH, VF, Errors Cat. mentioned that this pair is rare, C.v. $850, Est. $400-$500

1974, Energy Conservation, 10c multicolored, left sheet margin single with red and green colors omitted, full OG, NH, VF, C.v. $275, Est. $100-$150

1975, David W. Griffith, 10c multicolored, a single with brown (engraved) color omitted, in addition a single with brown color strongly shifted to the top, both with full OG, NH, VF, C.v. $450 for stamp with omitted color, Est. $250-$300

1975, Banking and Commerce issue, 10c x2 multicolored, horizontal se-tenant pair with brown and blue (litho) colors omitted, full OG, NH, VF and scarce, APEX certificate, C.v. $1,100, Est. $400-$500

1978, Piano, 8.4c dark blue on yellow paper, horizontal imperforated strip of four coil stamps, pre-cancelled ''Washington. DC'' between two horizontal bars, which have gap between 2nd and 3rd stamps, full original shiny gum, NH, VF, C.v. $1,500, Est. $700-$800

1975, Flag over Independence Hall, 13c dark blue, red and brown red, transition block of 20 (2x10), representing blind horizontal (all through the block) and vertical perforation at left and between 6 rows, that is forming 6 horizontal pairs imperforated between stamps, 2 pairs imperforated between stamps and on the right and 2 pairs imperforated vertically, slight foxing on the right stamps, full original vertically ridged gum, NH, VF and...

1976, Telephone Centennial, 13c black, purple and red on tan paper, side margin horizontal strip of five, three right stamps have all colors missing (black trace on a common and on two error stamps came from extraneous paper), full OG, NH, VF and rare, the stamp with missing all colors priced with ''-'' in the Cat., Est. $1,500-$2,000