St. Peter (?)

Salzburg, circa 1440
Lindenwood and polychromy
Metropolitan Museum, Cloisters Collection, 1964 (64-312)

From the collection of the Nayerisches Nationalmuseum, Munich. The label identifies Peter with a question mark, noting the absence of keys but presence of short beard and curly hair. I am not sure what the object in the right hand could be. It is the size and shape of a large cellphone:

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Photographed at the Cloisters by Richard Stracke, shared under Attribution-NonCommercial-ShareAlike license.