Based on Palindromes, Letters read the same upside down but switching from black to white negative spaces. Letters already with rotational symmetry gets embedded with itself instead. Didnt bother with the numbers much though. Couldnt make 6 remain a 6 upside down though a Ying Yang could have sufficed now that I think about it..

The normal version.

The reversed version of AT Imagiro for the Reversecomp (2nd entry).

This should be printed on paper and cut according to symmetry axis to achieve the result as in the samples.

Reverse in the  visual context can mean many things. I decided to create letters and mirrored them, attaching them to a spine.The letters looked like filigree jewellery  pendants.

I know that the I , T and W don't follow the design rule; I tried to align them on a spine but the result was unsatisfactory.