IN THE EARLY 20TH CENTURY "GEE DAD IT'S A WURLITZER" WAS A POPULAR ADVERTISING SLOGAN. THIS PROBABLY REFERRED TO THEIR ICONIC PINBALL MACHINES, BUT WURLITZER ALSO PRODUCED POPULAR MUSICAL INSTRUMENTS, LIKE THIS SPINETTE ORGAN.THIS IS A 16 PAGE OWNER'S MANUAL, IN SUPERB CONDITION. NO YEAR IS EVIDENT-I'M GUESSING IT'S FROM THE 1940'S OR 50'S.