Messerschmitt Bf-109 V3 to V-6 prototypes
 

Gentlemen:

My question concerns the Messerschmitt Bf-109 V3 to V-6 prototypes. I understand many consider the reference book Messerschmitt Bf 109 A-E, by Radinger & Schick, © 1998 Schiffer Pubs., to be the best information in print on these prototypes. Does anyone know if the information in that reference (for the V-3 to V-6 prototypes) is still the best available? It has been 14 years since the book was published. I also have a copy of the more recent Monografie #44 Messerschmitt Bf 109A-D, by M. J. Murawski, © 2011 Kagero Pubs., Lublin.

I would like to know how the civil registration for the V-6 was identified as D-IHHB in the Kagero reference. Also how it was identified as the plane lost in a fatal crash at Careres. Spain in 2/11/1937? . Have any additional photos of these prototypes become available since the 1998 publication of the Radinger - Schick reference? Has a photo been found showing the left side of the V-4 D-IALY, that clearly displays its cowling details?

Thank you for your time,
Ken Glass