United States, Scott #1868, used(o), 1984, Great Americans Series, stamp shows Lilian M. Gilbreth (1878-1972); with her husband, Frank, they were one of the great husband-and-wife teams of science and engineering; in the early1900s, they collaborated on the development of the time and motion study as an engineering and management technique; they pioneered in the use of motion pictures for studying work and workers; they originated micro-motion study, a breakdown of work into fundamental elements now called therbligs (derived from Gilbreth spelled backwards); these elements were studied by means of a motion-picture camera and a timing device which indicated the time intervals on the film as it was exposed; the couple believed there is one best way to get any job done and that process should be replicated through the manufacturing process eliminating extraneous steps and producing the most efficient results; as an aside, they are also well known from their book 'Cheaper by the Dozen,' written by Frank and his daughter Ernestine Gilbreth Carey, which is based on Frank, Lillian and their 12 children; 40 cents, engraved, perforated: 11, dark green, Scott 2019 Catalog Value: 25¢, nicely centered, large, very light, half circular, red-inked, double-rimmed, hollowed-out, quarter clockwise turned, socked-on-the-nose cancellation over the right half of the stamp and extending the over the main image, sound back, good perforations. This is not a 'bait-and-switch;' the stamp you see will be the one you receive.
Please review my terms of sale. If you are not ordering from the United States, there is a $US1.55 additional postage expense that needs to be added to the price of the stamp. If you are ordering from the United States, there is only a $US0.68 added postage expense. Also, if you make additional purchases from my offerings, they can all go in one mailing at no extra shipping expense for the added purchases. I will send the purchase by US first class mail, since the relatively low value of the stamp does not warrant signature or tracking mail. Hence the buyer assumes risk of loss or non-delivery. I will keep a scan of my mailing to verify that the correct mailing address was used. If not satisfied, return the stamp to me at your own expense, and I will refund the cost, but not my postage to you. If the stamp is not as described, I will refund the cost and reimburse you for postage both ways.
By way of reference, I am an American Philatelic Society member (195176) and an American Stamp Dealers' Association (ASDA) member. Thank you for looking, and I hope this is the perfect stamp to fill that gap in your collection.