Selling as a set is difficult and some pieces are higher than others !! That said however I did not see any selling on ebay !! Just asking prices !! That’s the problem with setting a value to anything old or new !! No matter what the value is,, if no one is buying,, it only worth what someone is willing to pay whatever that may be !!
If you want to sell as a set,, your best bet is craigslist !!

Thanks for your help! Now, I just have to figure out what to sell a 12 piece set for. lol. This pottery business makes it very hard to find out what you have and value. Thanks again.

According to what I found this pattern was made between 1947 and 1960 so probably had different production runs !! Richelieu is the correct spelling !! Since the stamps for the marks were done by hand it is likely just a spelling error !! People are not perfect !! However the prices for this pattern seem to be a little higher than some others by the same maker !! In the UK listing price is about $17.00 USD,, here about $24.99 but that is asking price for cup and saucer set !! Other pieces are higher !!

These should be better. Could u tell me what is the correct spelling of this type of pattern. And would it be more rare? for production errors.

Yes it did but pic is not close enough for me to read the mark and it doesn`t enlarge,,need a close-up !!