Featured Vintage Glass decorated with butterflies & Chinese Characters

I originally thought these were vintage Georges Briard but they aren't marked and I didn't see any via google images or pinterest. Does anyone recognize them? Small, square, charcoal colored glass enamel decorated wtih butterflies and Chinese characters. Approx. 3.62 x 3.62 inches. Thank you for looking!

 

Looks like Japanese (not Chinese) may help your search!

 

Chance Glass.

 

Japanese DUH!!! Thank you!

 

I am not sure but these may be considered smoked color glass.

 

They are lovely. Did they have a function, or are they only for decor?

 

I'm still thinking they are by Chance. It's a known shape and colour.

 

I agree with you. I had some small vintage fashion trinket trays that were by Chance. I had never even thought about it. Thank you!

 

I've a couple of reference books on them, I'll have a flip through and see if it's a documented decoration. They did make a heck of a lot of one off, advertising and commissioned pieces though. The transfers were mostly made by Johnson Matthey.

 

I've had a trawl through the two books. They're wonderfully geeky.

That decoration isn't in them, but the shape and colour looks right. There's countless undocumented ones, made for all sorts of customers. So I still think Chance.