At each Mister Donut store (excluding some shops), the "2013 Thank You Sale", which sells 10 popular donuts of 2013 for 100 yen, started on December 4th.

2013 popular products are now 100 yen! (Source: Mister Donut)
2013 popular products are now 100 yen! (Source: Mister Donut)

The sale targets a total of 10 types of donuts, including "Pon de Ring" and "Angel Cream". It seems that it was decided based on the sales results from January to September 2013. The sale is until December 10th.

The target products and rankings are as follows.

1st place: Pont de Ring
2nd place: Angel cream
3rd place: Pon de Double Chocolat
4th place: Angel French
5th place: Chocolate fashion
6th place: Pon de brown sugar
7th place: Old fashion
8th place: Golden chocolate
9th place: French cruller
10th place: Pon de Chocolat

Also, from December 4th, 8 kinds of "Pon de Umaimon", which is an arrangement of "Umaimon" from all over the country, are on sale. It's not on sale, but it looks good to enjoy together.