can you help me confirm Swiss ETA?

[jpz5142]

First off this was not from a rep, rather an used Invicta that I got off of eBay for a song and a dance.  I am going to do a movement swap with one of my reps with an a2824 that is in not so good shape, marked as ETA and the stamps look clean to me but then again I am not an expert. Given the price of ETA movements these days it wouldn't surprise me that more donor watches are facing the chopping blocks! Only reason that I would even be suspicious is if someone already did a movement swap and re-listed it without stating that particular detail. I have a pic of the stamps on the main plate and tried to get a pic of the hair spring jewel.  

 

 

[mymanmatt]

gen for sure

[fraggle42]

I've read that the right hand step (to the right of the 'DM' in this one) is curved on gens (and some fakes) and straight on fakes.

 

<edit>

 

And looking closely at the second picture, I see that it is there and I missed it the first time around!

[jpz5142]

Thanks, got this for such a good price just wanted to make sure it's the real deal.