See the following image. It shows the mark you have was used by Alfred Meakin 1945-1960s.
My research indicates your six Alfred Meakin dinner plates in the Athol pattern would have an estimated retail value of $120-132 assuming good condition an depending on sale geographic location.
As for where to sell.....If you want to sell quickly at wholesale prices, try one of these sites.I do not know where you live so I will make suggestions for three countries.
Online auctions like eBay generally bring wholesale selling prices.
If you would like to sell close to estimated retail, some ideas are:
The internet has your largest audience of buyers. Place small ads on these sites or set up your own small store on these sites.
Be sure to specify local pick up only for large items. That way the buyer would be responsible for obtaining his own insurance and transport.
These sites carry antique as well as vintage items.Accept PayPal only.
Etsy.com - small fees - 20 cents to list plus 3.5% final price.Artfire.comBonanza.com
These sites are excellent and more upscale but fees are higher. I only recommend them if you have several items to sell.GoAntiques.comRubylane.comTias.comcyberattic.comtrocadero.com
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.
I hope I have helped you.
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