At the Nudie Jeans event at Solo in Stockholm I met a guy wearing these very classic 50’s style tortoise frames from Japanese Tana-Gokoro. The makers behind the brand have been making eyewear for the past 80 (!) years.
At the Nudie at Solo Event, Stockholm, Sweden
Published
Bonocle 
We carry these at Black Optical! Kaneko is the manufactor. So good.