In May 1941, Imberti served in the 366^a Squadriglia, 151^o Gruppo CT, in Libya. This unit was at the time equipped with the Fiat CR.42.

On 2 May 1941, a pair of CR.42s from the 366^a Squadriglia flown by Tenente Amedeo Guidi and Sergente Imberti were involved in combat with three Blenheims. Sergente Imberti claimed a Blenheim while Tenente Amedeo Guidi claimed a damaged.
It is possible that they had been involved in combat with Blenheims from 55 Squadron, which reported L8398 as struck off charge due to unknown reasons.

Imberti ended the war with 1 victory, this one claimed while flying the Fiat CR.42.

Claims:

Kill no.	Date	Number	Type	Result	Plane type	Serial no.	Locality	Unit
	1941
1	02/05/41	1	Blenheim (a)	Destroyed	Fiat CR.42		North Africa	366a Squadriglia

Biplane victories: 1 destroyed.
TOTAL: 1 destroyed.
(a) Possibly claimed in combat with Blenheims from 55 Squadron, which reported L8398 as struck off charge due to unknown reasons.

Sources:
53^o Stormo - Marco Mattioli, 2010 Osprey Publishing, Oxford, ISBN 978-1-84603-977-5
Hurricanes over Tobruk - Brian Cull with Don Minterne, 1999 Grub Street, London, ISBN 1-902304-11-X
Royal Air Force Bomber Losses in the Middle East and Mediterranean, Volume 1: 1939-1942 - David Gunby and Pelham Temple, 2006 Midland Publishing, ISBN 1-85780-234-9