Why is $E°_{cell}$ not $\Delta E°_{cell}$?

$$E°_{cell}$$ is the EMF of the cell for a reaction with respect to standard hydrogen electrode(SHE). So why don't we represent $$E°_{cell}$$ or $$E_{cell}$$ by $$\Delta$$ symbol, in the same manner in which we represent $$∆H°,∆G°,∆S°, etc$$ with respect to initial absolute zero temperature?

• By convention, we write $V$ or $E$ to represent a difference in potential. Adding a $\Delta$ would refer to the difference in potential difference. – Zhe Oct 7 at 13:27