I have some first day covers from 1960s. The envelopes have not been opened. What might be inside? Are they more valuable unopened or if I open them carefully will their value be preserved?

by J.Nicholls
(Norfolk)

Churchill postmarked 8th July 1965 4d stamp

Comments for I have some first day covers from 1960s. The envelopes have not been opened. What might be inside? Are they more valuable unopened or if I open them carefully will their value be preserved?

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Feb 26, 2016
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by: fred

Normally the insert is just an informational card, I have found the value to be the same open or sealed.

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