What does 빨간색 물음표 look like on Facebook?

On Facebook it is the design shipped in 16.0, shown above at full size. Older revisions are listed beneath it.

When did Facebook add 빨간색 물음표?

Facebook first drew 빨간색 물음표 in 1.0, released 2014년 1월 31일.

Meta Platforms, Inc. has shipped 13 versions of 빨간색 물음표. Each is dated, so you can see when the design changed.

Facebook 3.0

Facebook shipped a new design for 빨간색 물음표 in 3.0, released 2018년 12월 2일. The previous design is shown beside it.

✳ marks a release that redrew this emoji. The rest re-shipped the design unchanged.

What does 빨간색 물음표 look like on Facebook?: On Facebook it is the design shipped in 16.0, shown above at full size. Older revisions are listed beneath it.
When did Facebook add 빨간색 물음표?: Facebook first drew 빨간색 물음표 in 1.0, released 2014년 1월 31일.
How many times has Facebook redrawn 빨간색 물음표?: Meta Platforms, Inc. has shipped 13 versions of 빨간색 물음표. Each is dated, so you can see when the design changed.