The chances are high that the internals are from Sieg.
The exterior is very similar to Sieg.
In one post recently, someone said that a tell-tale sign that a lathe is not a genuine Sieg is if the horizontal drive shaft protrudes from the mounting bracket on the right hand end (just under the lathe bed on the far right side).
This picture does show that to be the case on this lathe.
I have no experience with this particular lathe, but I have been using a Sieg "knock-off" for over 10 years.
I have opened it up, and it does have the "Sieg" name on the printed circuit board that controls the motor speed.
That in itself does not mean much, I guess, but it does tell me that it is probably basically a Sieg.
If I were in your shoes, I would buy this lathe. . I think it will work out fine for you. . Of course, it is impossible for me to give any guarantee.
One think I would like to know if you can possibly tell me is the "power rating" ... on the front panel, does it say 500W ?
I haven't tried looking up this lathe on Amazon, but I will try that now.
EDIT: . Nope. . I clicked on the pic and it does not take me to the Amazon listing. . If you can help me get there I might be able to learn a little more.
Oh ... made some progress doing a Google search .... is this the listing ? . Looks much the same as your pic ...
Amazon.com: BestEquip Metal Lathe 7" x 14",Mini Metal Lathe 0-2250 RPM Variable Speed,Mini Lathe with 4" 3-jaw Chuck,Bench Top Metal Lathe,Benchtop Lathe, for Various Types of Metal Turning: Home Improvement
www.amazon.com
I see this one has a power rating of 550W, which is good and typical of current Sieg lathes.