Two gloriously sunny shimmery yellow lucite buttons.

They have all the depth and colour variations that make vintage lucite plastic so attractive.

They are Big - 3.5cm each - probably intended for 1950s jackets or cardigans that just had 2 big buttons at the top.
There are 2 on the display card, printed on the top of which is

"FOREIGN". 

They were found in an old button warehouse and are probably French.