This question gets asked all the time.
Unfortunately, there's really only three ways to know for sure
1. Were they purchased at a La Casa Del Habanos? If not, there's reason to suspect their authenticity
2. Do their measurements match the specs for the particular vitola you have?
3. When smoked, do they 'taste' authentic?
You can forego #1 on the list some of the time, but #2 and #3 are necessary.
It's damn near impossible to tell from a few webshots whether they are authentic or not. There is nothing in the pictures that indicates, to me, that they are obviously fakes. That should not be construed as an endorsement of authenticity, however.
At this point, it's best to smoke em. Unless you are greeted with a strong Windex flavor, they should be good to smoke. Enjoy them, and be happy for the price you paid (since you said they were gifted!)