We have these 2 pieces of Henriot china, passed down from my wife's
Grandfather. We estimate their date of origin to be around the
1920-30s. We would like to know any information about these particular
peices (not the henriot line in general) and their current market
value.

http://www.collectiondx.com/auction/henriot1.jpg
http://www.collectiondx.com/auction/henriot2.jpg
http://www.collectiondx.com/auction/henriot3.jpg

Here is a link with the H. Q. markings:

http://www.libertys.com/quimper.htm

but the markings don't help narrow down the date beyond what you have
stated.

The phrases mean, roughly, "He who marries in haste repents at
leisure" and "Never make love on Saturday that you couldn't make on
Sunday".  Perhaps your grandparents received these as wedding gifts or
bought them on a honeymoon?

It appears that these are small souvenir dishes, which were produced
in large quantities, a good size for a pin or soap dish.  Although the
shape and pattern are unusual, the decoration is not what typical
Quimper collectors seek.  In an online auction, assuming that they are
in good condition with no fleabites or cracks, I would place a reserve
of $35 for the pair and would expect a closing price of $40 or $45.

Personally, I wouldn't sell them, given that they were your
grandfather's, their attractiveness, and clever sayings.

I hope this helps.