Issued by Letraset as dry-transfer type in 1972, with alternates for AKR and a QU ligature. No good digital version available yet.
The 5th revised edition (1976) of Lettera 2 (but not the original 1961 edition) shows a nearly identical alphabet as “Fancy Letter (1957)” and credits the design to Walter Haettenschweiler. Differences in C and E (ball terminals on both ends) as well as Y (no top serif). [Lettera 2] “I don’t remember exactly where I found some existing letters. I then completed them into a full alphabet.” — W. Haettenschweiler, Swiss Type Design.
See also Eminence (PLINC, 1962, after Harper’s rimmed initials), Abbey Scroll, and Daisy (Solotype).