Well MrMox, now you're gonna make me get my reading glasses out. The two Funklenk sections are short and when a turret is shown, it's a pic of a Tiger II....so nothing there.
Nothing obvious jumps out at me in the 503 section. There is one pic on the top of page 165, which does look like an antenna where you've described it. It's of tank 332 and part of a series of shots where they're doing some recovery training. The picture shows three men attaching the tow cables to the front of the tank, which is buried in mud.
I took a pic of it so I could get a better look at things. I won't post the entire pic here, but here's a close up of the area in question...
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Looks like two helmets and a loop of something, a belt or rope maybe, hung over the smoke discharger unit. There's a shadow of it on the turret side indicating it's shape. Anyway, that's what it looks like to me.
There's a pic of the back of the same tank on 163 and 164. They have something hanging on the left rear part of the turret too. Actually there's stuff scattered on the top of the turret and rear deck.
Definitely an interesting series of pictures but maybe not the ones you were talking about. If not, I guess we'll have to wait until you can retrieve the book from your dad.
Take care.