Royal Worcester demitasse gilt interior 1869-value?

I have a set of 6 Royal Worcester demitasse cup and saucer - gilt lined. If I read the markings correctly they are from 1869. No chips, cracks, or crazing that I can see.
Anybody have an idea of what they're worth?

 

I've found the open diamond shape is 1929.
https://fineantiques.co.nz/resources/dating-worcester.html
https://www.museumofroyalworcester....ways included,printed below the standard mark.

 

Agreed, they’re much later than 1869. Made in England is a big clue.

 

As Obb says, Made in England is a good date indicator. According to the source below, "Made in" usually means post-1914.
Your set is very pretty! Checking ebay SOLD prices will give you best indication for value. It also depends where in the world these are located and will be sold. Here in the USA, I see sets of six 1920s RW demitasse cups/saucers sold recently on ebay for anywhere from $70-$250. IMHO, yours would be in the upper half of that price range... but could take a while to sell.

https://www.stokemuseums.org.uk/pma.../GUIDES-TO-DATING-POTTERY-FROM-BACKSTAMPS.pdf

 

Very nice coffee set -- the little enamel dots and decorations are called "jewels." I bet these originally came in a very handsome case, possibly with silver demitasse spoons as well. I would've placed this set in the 19teens and I can't see the date code mark well enough. 1929 sounds fine but you can check by googling Royal Worcester date marks.

 

I also see the "open diamond" mark under the O in Royal Worcester, which denotes 1929.

 

Yes, that's correct. The mark beside the RW crown mark was used primarily in the 19teens and into the '20s.

 

I’d agree on it perhaps being a boxed set. I’ve seen them with nice silver gilt spoons.

 

Thanks everyone for the excellent information. I have just listed these on eBay in the US as a 7 day auction starting at $150. Please pass the word to anyone who might be interested.