Cute Vintage 60s Napcoware Christmas Carol Mice Set of 4

Set of 4 vintage Napcoware Christmas mice hand-painted in red, white, and green holiday colors. They were made by Napcoware (National Potteries Company) in Japan, dating back to the 1960s. Two mice are playing musical instruments (a harp and a guitar), one is holding a stocking, and another a bell. The two girl mice are wearing green boots, the two boy mice are wearing black. They are approximately 4" tall x 4" wide x 4" deep. Three are in great condition, no chips, just a little crazing in the white trim. The mouse with the stocking is cracked but was repaired (see last photo).