Macau, Bank of China - 100 Patacas 2012 Commemorative

This note was issued to celebrate the centenary of the founding of Bank of China and was released in February 2012.
One Hundred Patacas MO Prefix

Dated 5.2.2012, PNL

 One Hundred Patacas BOC Prefix

Dated 5.2.2012, PNL

Reverse

Front Cover with Note

The design of this note incorporated the followings:-

Obverse - Note tinted in gold and illustrating the Bank of China Head Office Building on the right. On the left it incorporated the magnificent Great Wall and the press release (in Chinese) of the founding of the Bank of China in 1912. In the center, a number “100” in Chinese calligraphy to highlight the commemorative theme of the note. The symbol of “∞” has been used to replace the “00” of “100” to imply that Bank of China will continue to prosper and grow without limitation. The note is dated 5.2.2012.

Reverse - Predominaly in green and its main theme is a lotus in Chinese ink and wash painting. Lotus is the floral emblem of Macau SAR.

According to the bank's website, 3.0 million pieces were printed but not less than 1.0 million pieces were sold to the public at MOP 150 each. Is than means that the rest were retained or handed out as gifts to guests, business associates or staffs of the bank etc? So far, I have only sighted two prefixes, ie MO and BOC. Is there a third one, just like those issued by BoC Hong Kong Branch?