He 111, Schleppgruppe 1/Transportgruppe Herzog?

[cproyston]

All,
I'm fascinated by the image below, not least of all because it's the only He 111 I've seen carrying the Yellow V underwing marking.

http://www.soldiersmuseum.com/pages/ww2/sh...-armored-66.htm

Can anyone help pin down the unit ID, STkz or WNr, my initial guess is it's an aircraft of Schleppgruppe 1 (or Transportgruppe Herzog) as they're the only unit I can pin down operating the type from Köthen at, or about, that time (near war's end)?

Bit of a long-shot I know, but hoping a Transportflieger expert might be able to shed some more light and provide a positive ID,

Chris