Bike Forums - Need help to identify frame

I'd appreciate assistance in identifying my frameset. I bought a Domane 4.1 bike last year and got in an accident. The frame actually seemed OK but I didn't want to trust it, so I got another one.

A friend of mine works at Trek and got me a new frame at a discount that was part of their over stocked inventory. The problem is that all he knew about it was that it was a Domane 6 frameset. I'm selling the bike to replace it with a mountain bike and am trying to figure out the value of the whole package, yet I can't even find my frame on Trek's website. The all white color seems unusual and there was a sticker on the frame that had a date of September 2015. I'm not sure if that was the manufacturing date (late 2015 for 2016 model) or the product-year date (2015 model).

In any event, I'm not sure what the value of the frame is by itself without being able to identify it for sure. I haven't found a single photo of an all-white Domane 6 frameset anywhere. Thanks!