Vintage Made in Japan Stacking Mugs with Metal Carrier

A lovely vintage collection of 3 stackable mugs made in Japan, circa 1960s, along with their unique metal carrier. Note these are vintage and as such, have some age to them as highlighted in the photos: the metal wrack has some rust and loss of paint, consistent with it's age of 60+ years. Originally, there would have been 4 mugs but we are missing one mug. Price reflective of this.