The Savona division had been in North Africa since the start of the war. It was brought forward to help defend Tripolitania after Operation COMPASS, and then placed in the border defense position during late summer 1941. There it stayed until it had to surrender to 2nd South African Division on 17 January 1942, when it had run out of food and water. Its commander, General Fedele de Giorgis, was awarded the Ritterkreuz for the defense according to German records, but I have not been able to verify this. He survived the war and later became commander of the Corps of Carabinieri in Italy.
I would be interested in comments and corrections, and also further information on the coastal defense guns.
This order of battle is based on German records, and is likely to not be 100% accurate.
55th Infantry Division Savona (A.S. 40 Type)
Three platoons 4.7cm anti-tank guns
1 platoon 2cm anti-aircraft machine guns
15th Infantry Regiment
One 81mm mortar company (6 mortars)
Three battalions (2nd battalion in Bardia)
Each battalion staff, three rifle companies with 12 light MGs each, and one support company with 18 4.5cm mortars and 8 anti-tank rifles.
16th Infantry Regiment
As 15th Regiment, 2nd battalion also in Bardia.
Additionally one 6.5cm infantry gun company with 5 guns.
Light tank company with 13 L33 tanks (sunk on transport)
12th Artillery Regiment
1st battalion (10cm howitzers) 1st and 2nd batteries (4/5 howitzers, respectively) sunk; 3rd battery of 4 howitzers in Naples.
2nd battalion (10.5cm guns), 3 batteries of four guns each 3rd battery in Naples
3rd battalion (7.5cm guns), 1st battery 6 guns, 2nd and 3rd 4 guns.
8th independent battery with 2 coastal defense guns of unknown calibre
27th independent battery with 6 coastal defense guns of unknown calibre
503rd and 504th independent battery with 8 coastal defense guns each of unknown calibre
55th Field Replacement Battalion with two companies (in Naples)
255th anti-tank battalion with 8 3.7cm and 4 4.7cm anti-tank guns
Pioneer and Signals Troops
127th Mixed Radio and Telephone Company
55th Specialist Engineers
Further signals troops in Naples
27th Bakery Detachment (motorised)
Motorised V.A. Detachment
155th Mixed Supply Column (motorised)
45th Field Medical Detachment
75th Carabinieri Detachment (motorised)
Field Postal Service
55th Field Postal Detachment (motorised)