Also known as Southern Tier 2XRYE
Commercial description
"Brewed Exclusively for Pittsburgh Craft Beer Week. We like to experiment. Of course, every experiment needs to be tested, right? So how better to test a beer than to drink it? You’ve got it– there is no better way! Pittsburgh is a great city, and you’re a big market for us. We thought we would thank you by trying out a new recipe for a beer we’ll release this fall. Pittsburgh Left is brewed exclusively for your beer week, and is a double rye ale. At 8.0% abv, we used 2 varieties of hops and 4 types of malts on this one. Expect medium bitterness."
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Southern Tier 2XRYE

The brewer markets this same or near-same product by more than one names. This can be the result of a brewer distributing this beer under different names in different countries, or the brewer simply changing the name, but not the recipe at different points in time.