Valerie Hector asked that I post the following:

A hand-colored drawing of such a bead shop sign is included in various editions (attributed to various authors - see OCLC) of the 1931 book Shop Signs of Peking. Here is a link to the copy posted on Sotheby's website:

http://www.sothebys.com/en/auctions/ecatalogue/lot.197.html/2016/china-print-paper-l16409

the shop signs of peking (yandu sha ||| asia ||| sotheby's l16409lot8y8nmen
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Peter Francis was the first, I think, to reference such a shop sign in the 20th century bead literature, including a sketch of the sign in his early monograph on Chinese beads and citing Louise Crane's 1927 book China in Sign and Symbol.

I am attaching an image of the sketch that appeared in Peter's monograph - also an image of the hand-colored drawing that appeared in Shop Signs of Peking.

Valerie Hector