I have an older set and the mask is definitely molded plastic. The sweater has one folded over tag which says: Made in China for the Pleasant Company 1988 Pleasant Company and the number 3395 next to the seam.

I looked at your tag and it looks just like mine except it looks as if yours wasn't sewn into to the seam well. Maybe yours got past quality control? As for the mask, it is definitely not the original one.

Hope this helps,
Melissa