Thanks Ivo - Hmm, the face canes are, indeed, the same. This is getting more intriguing.
And thanks, Marcus, for the email pointing me to sources for books covering murrine. Whether or not they will cover the "face canes" discussed (or even if either are the "hefty" one that Ivo mentioned - probably not), I have ordered Venetian Beads, Mosaic Glass and Murrine ... (Giovanni Sarpellon) and also Designs In Miniature ... (Moretti, Gianni and Sarpellon). I am also considering the Murrine E Millfiori ... catalog you mentioned.