Thank you for your patience.
Your Wedgwood mark dates 1965-1980 and indicates the Regina Ironstone plate was made in the Tunstall, Staffordshire factory.
From my research I was able to determine that your 10" plate has an current estimated retail value of $35-45 assuming good condition and depending on sale geographic location.
In general, a private seller to a dealer, via consignment or at auction can expect 30-50% of estimated retail value.
Insurance replacement values are usually about 20% more than retail values.
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