From your picture it looks real: i have a 190se brush that looks identical to the one in your picture, which i bought as part of one of MAC's tryon pacs a couple of years ago. The pac was a foundation/concealer one which came with a full size studiofix or studiotech of your colour choice, a concealer (stick or select) and travel wipes, fast response eye cream and the mini 190se brush.
HTH