This Mew is part of the year long distribution to commemorate the 20th Anniversary of Pokemon.
It was initially given away as unique Serial Code, and subsequently redeemable with common Serial Code MEW2016 .
Photos in the screenshot section show the queuing in one of the stores in Singapore,
where avid fans wait to get their free Mew Serial Code.
The dates differ slightly between region to region, between unique serial code and common password distributions.
US: Jan 27 to May 31, 2016 and Jun 10 to Aug 31, 2016.
EU: Jan 27 to May 31, 2016 and Jun 1 to 2, 2016 and Jun 7 to 30, 2016.
Format Ver.1.0.6-1, Post Updated Date:20180127_0433