piece identification

Need help identifying the brand of this handle and trim kit to find a replacement. The valve and cartridge function fine so dont want to mess them if possible. The photos are from two different showers, one that is complete and has identical valve and cartridge. Thought it was Grohe but...

Hello, i clearly do not have a whole lot of knowledge or experience in the matter. This being said, can someone please identify this piece for me and give me some basic information on it.. (The items name used to refer to it. Its uses and functions.. And its general value.. ) i would be really...