While they don't look exactly the same, they are definitely a pair. The pattern for these mitts is my own, it's a coin lace with a lovely thumb gusset that grows gracefully out of the coin lace. Knit on 3mm needles with 48 stitches, they knit up really fast. It's become my standby mitt pattern. It's all in my head and I can easily make minor variations to mix it up a bit.
I'll post it on Ravelry soon.