Here is a simple, Sterling silver, rigid ball-ended bangle made by the renowned Danish silversmithy Anton Michelsen (see bio).
Condition: Excellent, no visible damage
Marks: AM under crown, 925S, Crown over 3 lines (Royal Copenhagen)
Size: 6 cm (2.4") across (inside). Gap is 2 cm (0.8"), which is quite narrow, but even my chubby wrist can squeeze through.
Year: 1970s, as indicated by the two logos (after takeover by Royal Copenhagen