Circular Letters

Factory circular letters documenting running changes to the Porsche 356, organized by date and chassis number.

These are similar in design to the Service Bulletins already on the website, but focus more on changes to details in the cars – especially helpful for documenting dates and chassis numbers when certain changes were made. Below is a preview of the archive.

Circular Letter 25/55

The rest of this page is for members

Registry members get the full article, the workshop video, and every magazine and forum reference behind it.