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Thread: Fire totals Speedster, RS, RSR

  1. 01-07-2024, 04:43 AM #131
    68S_SK2
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    Quote Originally Posted by fourteenten View Post
    Doubt it is X ray, more likely magnetic, like NMR or MRI based measurement, nuclear magnetic resonance. https://regulaforensics.com/en/produ...n_number/7505/

    Cees
    This magneto-optical procedure is a good way to identify re-stamping after grinding off the stamping for the VIN number switch.

    To assess the originality of the chassis, I would recommend the following approach for high-value vehicles:

    1. Magneto-optical process to detect re-stamping after grinding off a VIN number - non-invasive
    2. X-ray spectroscopy of
    - metal sample of the VIN stamp area and
    - metal sample of the trunk floor panel and
    - metal sample of the dashboard

    The results of X-ray spectroscopy should be compared with each other and with verified time period metal sheet samples.
    The metallurgical compositions of automotive sheets have changed over the last 60 years, which can be detected by X-ray spectroscopy, but it is an invasive process.

    No doubt, a couple of restored cars would fail this test.

    BR
    Claudius
    Last edited by 68S_SK2; 01-07-2024 at 08:00 AM.
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