15thc perception on swallowtail merlons?

[Mark Knowles]

Visconti Castle, Castelbarco, Cislago, Varese(The current castle was built on the basis of a previous early medieval fortification. Owned by the Visconti family {Visconti branch of San Vito di Somma Lombard}, the structure was destroyed by the Swiss troops of Matteo Schiner in 1510 and subsequently rebuilt starting from 1620 by the Marquis Cesare II Visconti and his son Cesare III.)

Castello di San Colombano in Lambro(Visconti castle)(Looks very likely)

Castello di Galliate(post 1450 though built ontop of an earlier Visconti Castle)

Castle Vigoleno, Piacenza(it was destroyed and rebuilt several times.)

Torre Adro, Brescia(looks to be pre 1450)

Castello di Sorbello, Cortona(Allied to Emperor Sigismund)

Castello di Breno(Under Visconti control in pre 1450)

Castello Scaligero at Malcesine

Torre del Borgo di Recanati

Castello Dell'Imperatore in Prato

Castello Visconteo di Macconago, XIV sec

Portogruaro town hall, fourteenth-century

Soncino Castle

Castello di Thiene

Castello di Tabiano

Castello di Torcrescenza