Yixing tea set info

Hi all a couple of questions re this set I just picked up. It's a tea set yixing I believe with 4 cups and 4 nicely glazed sauces. Not sure if it's supposed to be a complete set because the colour of the saucers is different to the cup and pot and also the marks aren't the same on bottom in fact marks on pot cup and saucer from what I can see are different to each other is this normal. Tried searching for marks online bit to no avail. Appreciate any info chris

 

I think the saucers are a marriage. The cups don't fit the rings. Besides, I couldn't find a single Yixing tea set that comes with saucers.

 

Thanks for that found this on eBay these look more like set because of glazing still the colour of saucers clay and cup is still different.
Very happy purchase for 8 bucks

 

I should have added "saucers" to my search terms!