Lot 1095American Postal Machine Company, Boston, Mass. Fantasy Type B27 slogan flag cancel of "Alaska-Yukon-Pacific Exposition" on unaddressed cover, Very Fine.
Estimate $100 - 150.
These fantasy flags were created in 1923 by mis-use of old flag dies after the dissolution of the American Postal Machine Company. All used a Boston dial die and various slogan and other flag and machine dies. See explanation in Langford's Flag Cancel Encyclopedia. Interesting collateral material for flag cancel collectors.