| Robert Rive Blind stamp for Robert Rive 1875 (ca) Blind stamp Private Collection of Robert G. Hill, Toronto, Ont. www.hillcollection.com - Acc:193 LL/30840 On "Cloister of the Benedictine Monastery at Monreale Cathedral, Palermo, Italy". With number and title in the negative "1680 Palermo. Monreal. Interno del Chiostro", with partial oval blind stamp on the mount "Robert Rive"
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