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Porsche Factory Numbers


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When Porsche built the 356, as part of the manufacturing process serial numbers were assigned to major components by stamping them in to the chassis, the engine, and the transmission. The last several digits of the chassis number was stamped into body panels and marked in chalk on other components, to be sure those items were mated to the correct body during the assembly process. The chassis, engine, and transmission numbers were (usually) recorded on the factory Kardex records which were primarily a warranty record. 

In addition to the engine numbers, Porsche numbered the case numbers of the various crankcase castings. These numbers are sometimes used to match the pieces of a crankcase or to check to see whether the stamped engine number corresponds to the correct casting for that engine series.
 
Owners are often very interested in the history of their 356 and those cars that are more unmolested are considered by many to be worth more, although misrepresentation of cars history is common due to ignorance or sometimes fraud. 

Additional member resources include information sources, such as the Porsche 356 Registry's Chassis Number History. The information in this database has been accumulated over decades from many sources by multiple people. A particular car could have 0, 1, or a dozen records in the database, representing snapshots in time. The database is best used to gain clues that can be investigated, but you should not rely on accuracy.



Porsche 356 Registry Position Statement Against Counterfeiting and Fraud

The original Porsche sports cars were produced from 1948 through 1965 and have exceeded the factory’s and owners’ expectations for their longevity. The market value of the 356 series has continued to increase over the years with it now exceeding the value of many new 911 variants. This has resulted in an increasing number of 356s undergoing a thorough restoration – a trend supported by aftermarket reproduction of increasingly accurate components. 

Although 356s restored to original specifications are beloved by owners, some restorations take liberties with the objectives of this process...

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These exceptions in one way or another are misrepresented by using key pieces of another 356 to indicate that the “restored” vehicle is something that it is not. This dishonesty may involve stamping chassis number plates or even a new bulkhead piece with another car’s number, or cutting the main bulkhead chassis stamping out of one car and welding it onto the “new” car. These transgressions include stamping engine serial numbers on to substitute timing case covers to “recreate” a matching-number engine or re-stamping other numbered components. Some of these “restorations” take the opportunity to recreate a higher valued model such as a Convertible D, Speedster, or Carrera from an otherwise ordinary model. These are not clearly identified tribute cars or outlaws, but attempts to misrepresent a car as having been produced as a special model by the factory.


We admire the commitment of owners who have the time and resources to restore their 356 Models to original factory specifications and condition. However, going beyond an honest objective by surreptitiously attempting to recreate a car that was not produced by the factory and thereby mislead future buyers in the interest of creating illegitimate value and profit is not merely deceitful, it is simply fraud.


It is the position of the international Porsche 356 Registry that any restoration of a 356 should generate complete and truthful documentation of the facts and processes of the restoration and that this documentation should faithfully follow changes in a car’s ownership. Individuals interested in buying a restored car – particularly special or high value models – should demand such documentation as a condition of purchase.


Any Porsche 356 that is used and enjoyed as the factory intended requires at least diligent maintenance and perhaps even a full restoration at some point. For those cars that in the judgment of their owners have gone well beyond mere patina, the international Porsche 356 Registry encourages restoration that can then represent the specifications and condition the factory originally produced. However, it is important to the Porsche 356 community that current and future owners can be confident about what their car represents. We also charge restoration work to faithfully disclose the authenticity of the vehicle and major components with honest documentation.



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