A truly magnificent original English Porsche 912 Service Bulletin from October 1969. The document consists of 4 pages and is called:

Conversion of Type 912 USA engines from 616/39 to 616/40

The first 2 pages are about the conversion kit with all associated article numbers and quantities. The last 2 pages, called "Appendix to service bulletin" are about the installation of the conversion kit.

This now 53 year old document is in a beautiful and complete condition with traces of use according to age. The last page is loose and the third page is halfway. That certainly does not make the document less collectible. After all, it is an item officially used by Porsche.

A fantastic document for every Porsche enthusiast!

From my own collection.

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