PUZZLE 136 To the Letter

The letters on the left have been transformed into the symbols on the right.
Using the name rule, what symbol would the bottom letter turn into?
Choose from the four possible options.

Hint 1

First try figuring out what the rule is by looking at the top two symbols.
The letters cannot be rotated.

Hint 2

Try cutting the letters.
All of the letters and symbols are symmetrical, but this is not an example of mirror writing.

Hint 3

Try cutting the letters in half vertically.

Super Hint

Try cutting the letters in half vertically and swapping the right and left sides.
If you overlap them a little, they make the symbols on the right.

Answer for 'To the Letter'

The answer is '2'.