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As with any older car, value is often in the eye of the beholder, but to get a general idea, you might check https://www.edmunds.com They only go back to 90 on the used car values, but this should get you in the ball park.
PS: Welcome to the forum!
Basil
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1967 Jaguar E-Type OTS
1E13333, Silver Blue
PS: Welcome to the forum!
Basil
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1967 Jaguar E-Type OTS
1E13333, Silver Blue