Is This A True Eta 28xx Movement

[vaccum]

I got this movement for service...it looks like an ETA 28xx but there is no ETA stamp at the main plate...what do you think?

[HauteHippie]

I vote yes but defer to The Zigmeister. That stamp is puzzling.

[RWG Technical]

I have seen a few of these also...I think they are remarked ETA's, older ones (no jewels in the autowinder). Not Asian from what I remember, but gen ETA or aftermarket...

RG

[vaccum]

Look at the balance bridge