Very similar to the masks from the former Guttmann collection (CSD/17 and CSD/19), for example. See also Garbsch, (1978), p.20 & 63 & Pl.18.2 for another example, now in Leiden at the Rijksmuseum van Oudeheden (CSD/12).
In this case, the mouth has been modelled in a slightly open position.
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