These are two of the most popular pieces BY has, and they don't post the Married Covers anywhere to see, so I have taken a photo of the samples I have in my store.

The # 4104 Alta really uses a standard grade 2 leather as its "Married Cover" so its not a true married cover in that sense as they are not pre-cut and pre-sewn like the other ones are. Its the 9021 series leather (any color).

Here's the two married covers for the 912 series, and this is a very nicely textured, slightly pebbled, semi-aniline leather. I'd not hesitate to recommend it.