http://www.chars-francais.net/2015/images/stories/galery/1935_p178/m4530%2001.jpg
The picture shows Panhard 178 with plate 4530 as DML provides in their decal sheet. As i would like to depict this particular vehicle i stubled on a challenge.
The commander's hatch that is open, has a french roundelle painted on. The periscopes indicate this to be a late Panhard 178, whereas the hatch is without the "bulge" characteristic for late vehicles, but it is rather flat, as used on early variants. The bulge would prevent paintning of the roundelle. Chars francais has collection of photos of such vehicles ordered in line with their licence plates - this indicates that vehicles of the same unit (4528, 4531 etc.) are all of the late version.
My guess is that the hatch was latter added as a replacement from an early batch vehicle?
Looking for your comments!

Early vehicles were refitted with the later Gundlach periscopes at some point, it is mentioned in Trackstory 14 btw.

Nice, did not know about this magazine. I should have a link to a page where they mentioned the date of the Gundlach replacements on early production APX3 turrets, in my review blog.
/Stef

Thanks, that explains a lot!

this appears to be a later turret: vision blocks are of a later type. This would be earlier turret:
http://www.chars-francais.net/2015/images/stories/galery/1935_p178/90254%2003.jpg
But i will closely read the track story when i get home.

APX3 is the latest turret, but early APX3s had simple vision blocks and no Gundlach periscopes. It changed after the first few hundred or so, will need to have a look my sources later.

There are several vehicles in the early 4500-series that also have the early turret hatch without the ventilation dome, yet have the later style Gundlach periscopes and the narrow front turret vision slit, as of may/june 1940 pictures, these are undoubtably retrofitted modifications which are also mentioned in both Trackstory books on the Panhard. Check page 43 in Trackstory 14 for one picture example, + several on Chars-francais.

Tony,
much appreciated directions. I have old Trackstory 2 that mentions Gundlach periscopes, later retrofitted items to field vehicles etc. I have also found this page http://amd-35.narod.ru/ with lots of pics of same configured vehicles such as this one:
http://amd-35.narod.ru/AMD35_99792-99871/IMG_99792-99871/AMD35_1178.jpg
Best regards,
Marko