Decipher hidden text from a pixelated image

The following image shows 12 screenshots of the same hidden number (originals attached as PSD). [login to view URL] The number itself is white (#FFF). The background is off-white (#F0F0F0). Normally the screenshot quality is much better so I can easily decipher the number in Photoshop. But because it's all pixelated, I can't figure it out. I can't ask for another screenshot, so I need to decipher the number from these poor quality screenshots. I only need to get one working, since they all show the same number. I think this is the best quality one: [login to view URL] If I invert and do curves, I feel I'm getting close: [login to view URL] But not close enough to be confident. Hoping someone else has the picture editing skills to determine the right number. Must include an image of the revealed number (and what steps you followed to get there). As an FYI, this is how it's *supposed* to work (when the image quality is better): [login to view URL] Then with Photoshop Curves, easily identified as 5328. Please only take this project if you are 100% confident you know the number in the pixelated images, NOT a best guess.