Georg-Peter Eder 6/JG26 claims 17 August 1944

[Andy F-P]

Hello,
I am trying to research Georg-Peter Eder's claims for two Spitfires and three Sherman tanks on 17 August 1944. Eder took off with 6/JG26 as the Staffelkapitaen to attack an allied armour collection around Dreux/Chartres at about 11:30.

At about 11:50 he spotted the armour collection and was about to attack when he saw a Spitfire at very low level. He managed to shoot the Spitfire down and this crashed between two Sherman tanks destroying them both. He then spotted another low flying Spitfire and shot this down and it also crashed on a Sherman tank destroying it! Two Spitfires and three Sherman tanks in a minute, quite a feat!

In his JG26 War Diaries, Donald Caldwell explains this occurence but says that no Spitfires or any other allied aircraft could be identified as having been lost in this region.

Both aerial witnesses were killed in combat the next day. I believe, Eder was known as a trustworthy claimer and a man of immpeccable character. Can anyone help me identify these Spitifres or add anything to these events?
Thank you for your time.
Regards,
Andy