I have noticed that my Noctilux has two different fonts on the lens. The front and the aperture ring has the same one as all the latest Leica lenses but the body has the previous typeface. The lens has a serial number that one would be normally associate it with a V3 but according to Leica the serial numbers on the wiki are not entirely accurate.
This is what Leica can tell me about the lens.
Through all my Leica years I haven't seen another lens like this so I am curious to know if anyone else has an Early V4 with the same layout.