Coca-Cola Classic with the telltale yellow cap and the Hebrew "Kosher for Passover" ("Kosher lapesach") text. The circled-U symbol is for the Union of Orthodox Rabbis, and generally marks a Kosher product. The -P apparently signifies that it's not just Kosher, but Kosher for Passover.
Kosher for Passover Coke is made with sugar, rather than corn syrup, which is cheaper and sweeter. Made with sugar once a year so observant Jews can still drink Coke (corn isn't Kosher for Passover), the soda is actually the formula from before the mid '80s, when the "New Coke" fiasco occurred.