Be careful if you go ebay shopping for a screen. I've often seen standard screens described as Acute Mattes because they are in the box the Acute Matte came in when the PO of the camera/kit did the swap/upgrade.
Looks like the old standard screen. It is not an Acute Matte or Acute Matt D, because with these, the cross is etched into the glass. In your case it is painted onto the glass.
I would say it's the standard screen myself. Contrary to most people's experiences, I prefer the screen that has the large "bubble" in the center for quicker focusing. Yes, the Acute Matte is brighter, but the bubble screen is contrasty and things just pop into focus.