To be honest, I don't care that much whether this mosaic depicts Alexander the Great or not. What gets me is that these guys are wearing stripey socks!
There are quite a few surviving knit *cotton* socks with complex patterns (stranded color knitting) from Egypt from the Fatimid thru the Mamluk periods, that is, after the Islamic conquest.
There is no knitting from the Greco-Roman period in Egypt. For the Roman period like the mosaic, the socks are made by nalbinding. There are a number that are extant that are striped, but those are children's socks, but no reason there couldn't have been some for adults.
Here is one of those extant striped socks http://www.britishmuseum.org/research/collection_online/collection_object_details.aspx?objectId=155676&partId=1
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There is no knitting from the Greco-Roman period in Egypt. For the Roman period like the mosaic, the socks are made by nalbinding. There are a number that are extant that are striped, but those are children's socks, but no reason there couldn't have been some for adults.
no subject
http://www.britishmuseum.org/research/collection_online/collection_object_details.aspx?objectId=155676&partId=1
no subject