928cs

That is the funny part of the search.

I know that you have the same problem than me with the prototypes, lack of pictures, temporary registrations or use of plates use for many cars over the years and either unusual VINs or mixed with regular cars

The press cars are easier to manage in your case. What is really surprising is the order match of the VINs and registrations.

928cs

And here is a quick but important update.
I now have the official confirmation of my assumptions of CS prototypes.
- wp0zzz92zhs840108=>H6
- wp0zzz92zhs841129=>H43
- wp0zzz92zhs841131=>H48
- wp0zzz92zhs841267=>Hto be determinated...but I think it may be H49.

The H indicates a project car for the 1987 model-year and the number is the sequential order of the project.

By example, H21 is the well known convertible prototype and H50 is the four door prototype. Both belong to the museum, to the contrary of the CS prototypes.

928 GT R

Great information Samuel,

This "H" designation is new to me and I am wondering how it was applied to the Porsche product line?

How many total cars?

What models were they?

Fascinating...

928cs

The usual way of designating a project car was (is?) the model year letter followed by the number.

By example, you can find some examples online.
- 959 F7 (actually, this one has a 930 VIN!): 7th project of the 1985 (F) model-year
https://rmsothebys.com/en/auctions/p...ototype/693238
- 911 F22 (a very special Carrera 3.2!), 22nd project of the 1985 (F) model-year
https://www.ecurie.co.uk/blog/2016/1...era-club-sport
- 928 H21 (the convertible factory prototype), 21st project of the 1987(H) model-year
https://www.4legend.com/2018/porsche...commercialise/
- 928 H50 (the 4-door factory prototype), 50th project of the 1987 (H) model-year
https://www.classicdriver.com/en/art...orsche-928-h50

So, you get the idea, and 1987 was certainly a prolific year!

I still have others, E, H, J and K projects to identify

928cs

And here are my assumptions about the registrations of these four CS prototypes:
- wp0zzz92zhs840108=>H6=> BB-PW 935 (red, no right side mirror, nor CS sticker)
- wp0zzz92zhs841129=>H43=>BB-PW 823 (red, right side mirror, CS sticker)
- wp0zzz92zhs841131=>H48=>BB-PW 180 (red, no right side mirror, CS sticker)
- wp0zzz92zhs841267=>H49?=>S-JX 5390 (red, no right side mirror, CS sticker)

Only H43 is currently located, but need a lot of work, and I may have a way to find the last one. If you've got pictures of H43 and H48, don't hesitate to share them!
I do have some of the others two, but not many of these almost twins.

Thank you in advance.

993turbo

Do you have H54 under control? Jochen Mass car...

928cs

Yep, I'm in touch with the owner

About the Pilots cars, here is my point of view, for the moment:
H54=> Mass
H53=> Stuck
H52?=>Wollek
H51?=>Bell
I should be able to confirm the project's numbers next week.

I'm in contact with the owners of the three found cars, and need to find the Ex-Wollek.

993turbo

Wasnt H52 Bell?

928cs

Do you have a reliable source, please?

993turbo

Ex. Owner of H54 before it went to Switzerland.

928cs

Ok. I will check if I can confirm before asking J.J. or the current owner

993turbo

Im with JJ on chat daily.

928cs

I was indeed right:
H54=> Mass
H53=> Stuck
H52=>Wollek
H51=>Bell

Now, where is H52?
It is the only missing of the 4.

993turbo

Excellent.

Just need to find 52 then.

928cs

H6, H48 and H52 are lost. Well, they may be waiting to be discovered, in fact.