Here is a hint in reading corroded numbers.
polish slightly with 600 grit emery paper.
blow/wipe the dust away
spray with WD40 or other rust remover.
This may bring out the missing number.
You may have to repeat several times.
If that is not enough you can be more aggressive.
I caution about the next hint. Be carefull.
use above method but use an acid hydrochloric or preferably phosphoric acid
neutralize when done and use a coat of light oil to protect the finish from further rusting.
When the numbers are punched it work hardens the steel. These treatments help to make the differences visible.
__________________
Ralph Volkert
UC 2Mk I*
Upper Hull: CB 8075
Lower Hull: 8105
S/N: 9075
Date: Jun(est) 42
contract #: CDLV 213
1946 Willys Jeep
1974 Plymouth Road Runner
1987 Trans Am
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