Secret Obsessions is Atlas Obscura’s column where we ask wondrous people to take us down a rabbit hole. This edition features chart-topping pop duo Aly & AJ—sisters Aly and AJ Michalka. AJ Michalka knew she had found something special on the antique site Foundwell. With a delicate interlinking strap and circular face, the 1959 Audemars Piguet (AP) Disco Volante was the perfect piece to commemorate a return to music. It was 2017, and she and her sister, Aly Michalka, after a 10-year hiatus, had just released their first EP as…
