Byzantine?, Crusaders?, lead tessera ?

Byzantine?, Crusaders?, ? AD.,
tessera / token ? (ø 21 mm / 7,08 g), lead, axes coin alignment ↑↓ (ca. 180°),
Obv.: NT AV+ , half figures of three Byzantine emperors?, the left one nimbate, the central one nimbate with cross, the right one with small cross on head.
Rev.: H... - ..TAlx (?) , around cross on steps, two small x flanking below.
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