These are great vintage Christmas items -- even the box is neat!
They are older ornaments -- box has a red stick-on stamp that reads "PASSED, JIS S-3003, J.P.I.C." It also has blue stamped "V. C965, JAPAN".
Box top describes these as "XMAS BELL, SET OF 12". There are 6 round shaped ones (like dinner bells) and 6 shaped like "cow bells". Each has a different design on front and has various messages: Merry Christmas, Holiday Greetings, etc.
Round ones measure 1 1/2" tall and 1 1/2" at bottom diameter. The others are 1 3/4" tall, 1 5/8" long x 1 1/8" wide (at bottom). All have their ceramic clappers and each is stamped Japan (in red ink) on inside. They appear to have their original string hangers.
Bells are in very good condition - 2 of the cow bell shaped ones have tiny dings on bottom edge and one has been broken and re-glued (nicely done). One round shape bell has a small ding on bottom edge.
These are very nice, vintage Christmas items!