[Graham Boak]

Is there any more information in the book that might help?

However, looking in Fighters Over The Desert at the dates between Marseille's death and the opening of the battle of El Alamein, there are no clashes between the Jagdwaffe and 92 Sq. that make even a reasonable match. 92 lost two out of four on a ground strafe on the 10th, but that clearly isn't it. Other combats are either many-on-many or high altitude clashes where 92 came out on top. Or, allowing for some overclaiming, at least without more than single losses, if any.

So, on the current evidence, the best match is still that I described above, which is apparently too early.

The German fighter units available in this period were II and III/JG27, and III/JG53, at times operating together to mass as many as thirty fighters. Most of the operations appear to be in single staffel strength. Perhaps the German unit histories can provide more than this rather elderly source.