Wacky Packages 2nd (4th) Series OPC Box 1973
- The vintage OPC boxes are confusing, but it appears the 4th series was actually released in Canada as the 2nd series.
- The blue boxes were found full and definitely contained 4th series stickers.
- We believe that purple box was created for the 3rd series (which did come out 3rd in Canada) and they used a few of them for this series when they ran out of blue ones.
- Indeed the 4th series are by far the most common of the vinrage OPC.