1970. 1 3/4″ diameter each. Back sides have two raised holes on silver metal backing to insert chain (not included but standard chains work just fine). As an aside, we have seen these converted to belts with nice results as the designs look great even on their sides as they are quite uniform patterns. Set of 4:
1. Alternating Black and White diamond design radiating from the neon Pink center circle. Peter Max rounded logo at bottom and off to the side. Near mint.
2. Bright Pink star with a circle and check block background in grays and tans. Peter Max rounded logo at bottom. Near Mint-.
3. Circle in Circle design in Yellow, Green and Pink surrounded by a graduating two tone Green circle border. Peter Max rounded logo at bottom. Near Mint-.
4. Block and circle design in Pink, Gray and Yellow. Peter Max rounded logo at bottom. Excellent+.
These are fairly scarce alone and this almost complete set is very difficult to put together.