Miami ukuleles and tiples were distributed by Henry Stadlmair of New York from the mid to late 1920s. Stadlmair was the East Coast distributor of Hermann Weissenborn. Weissenborn is said to have made some Miami instruments, but most would have been made by Oscar Schmidt or Tuarturro. The label states that these ukueles were Used & Endorsed by Ukulele Hughes.
Source: Wiessenborn Miami Ukulele advert & label - reverb.com