Sigh, forgot lesson taught to me many, many years ago. Never rely on a single source. Dunning seems not have caught his incorrect designation of 172 Squadriglia
Aircraft in Profile No. 110 The Fiat B.R.20, by G. Apostolo, "On the same day [June 13, 1940] the 172o Squadriglia Ricognizione Strategica was formed at Bresso airfield, Milan, with six BR.20s"
"172 Squadriglia Autonoma Rst" is also noted twice in Shores et al A History of the Mediterranean Air War 1940-1945 Volume On: North Africa June 1940 - January 1942, for losing a Z.1007bis on a reconnaissance patrol over Alexandria on April 11, 1941, and for losing another Z.1007bis off Cypress on August 26, 1941.