Dear Willi and Roger, that sundial is not the one that Severino means.
It is older.
Mario
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Mario Arnaldi
Via Cavour, 57/c
48100 Ravenna
Italy
Lat. 44° 25' N - Lon. 12° 12' E
Redazione di "GNOMONICA ITALIANA" rivista di storia, arte, cultura e tecniche
degli orologi solari
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