The one is a Hispano-Moreque lustre pottery charger marked Manises, which is a pottery in Manises, Spain.
The other is from Alcora, Spain (marked VC SPAIN) and is also considered Hispano-Moresque lustre pottery.
The style of pottery is influenced by 15th and 16th century Hispano-Moresque pottery (Spanish with an Islamic influence) and those are likely what you remember seeing in a museum.
The ancient pottery was never marked and your pieces have minor wear, so we can rule them out as 16th century pieces.
There was a revival of the pottery in the late 1800's and again in the 20th century by Gimeno Rios of Valencia, Spain.
Your pieces are late 19th century and have a value of $200 to $300 each.
Some sites that I recommend for selling are Varagesale.com, Ioffer.com, OfferUp.com, Ebay and letgo.com.
You can also go to invaluable.com or liveauctioneers.com and search their directory for an auction house near you and consign to them.
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