“The reading, right to left as the Hebrew read, spells with the large capital letters,  Yod Hey Vav Hey, GOD.  Look at the Hebrew alphabet readily available in the King James Bible, Psalm 119.  Psalm 119 is divided into the alphabetic sections, these headings above the sections in Psalm 119 are the Hebrew alphabet.  The Jews immediately understood that God was being crucified. God’s name in Tetragamanaton-Tetractys”

Shalom!

He didn't inscribe INRI, those are the first letters of each word that he inscribed. The phrase in Latin was: "Iesvs Nazarenvs Rex Ivdaeorvm."

Which is Jesus of Nazareth King of the Jews.

What's more incredible is how the Hebrew looked which is why the Jews were so upset:

The Yod Hey Vav Hey as you said!

Mark