Time to reveal my Top-Secret mesh which I've also added a replacer version for: the Key to Lower Argnthand.

About this image

A comparison for the keys to Argnthand. In case you couldn't tell, the new models are 2x larger than the original (befitting, I thought, for the grandiosity of the ancient race). If people prefer the original size of the key to the 2x size version; I'm willing to fix it (as it isn't that difficult of a change).

The keys are: the original mesh (front left), new mesh with old texture (back left), new mesh with new texture (back right), and old mesh with new texture (front right). 

[Note: The following may contain minor spoilers for the beginning of the main quest]
Note: From a lore perspective, the new textures are highly debatable for lore-friendliness, as it is highly inferred through in-game dialog that Hasphat Antabolis made the key based on instructions found on the Dwemer Puzzle Box you recovered for him during the Antabolis Informant quest. For this reason alone I decided to give people the option of using the new mesh with the original texture, which also makes it easier for people to find replacement textures for it (as the texture the original key uses is a fairly common texture). At the same time, with the model relying on the new texture, it also makes it easier for people to make their own textures for it without accidentally messing with other mesh textures.
[End potential spoilers]

Any feedback is appreciated (such as, what you think of the early look at the new Key mesh and texture, which you can find here [https://drive.google.com/file/d/0BzKpacREhObYVUxKV2lFSWtaNms/view?usp=sharing] As of 2016/02/05, you can find an updated file here [https://drive.google.com/file/d/0BzKpacREhObYNUVrakRYbWtlTUk/view], which corrects uv issues, lowers the polygon count (was ~1.5x higher than now), and shrinks the size to 1/2x)

Thanks for reading and looking at this!