When Gandalf arrives in Isengard, and takes off his hat to greet Saruman, there is a sword attached to the saddle of his horse, as highlighted in the picture. What is this sword? I don't think it's Glamdring.
Glamdring, Foe Hammer
This is indeed one of the variations of Glamdring made by Weta Workshop, the prop designers for both the Lord of the Rings and The Hobbit film series.
From this link on their site. You can see the sword in the top right of the image but I've also provided as screenshot here:
If you look at the two photos you'll see the two hilts are indeed the same.
I've touched up the photo a bit. You can now clearly see the crosses on the grip as well as below down the top of the scabbard. The guard is also clearly the same.