Hello i have a Dacora subita with a vario anastigmat 1.56/75mm lens and when i first bought it i thought it was a Royal because its stamped on the leather case , but after looking at other images of the same camera mine does not have any names on the front and it is completely the opposite handed to the others with no name on it , i'll try to add a photo
Subita is the name of the lens, Vario is the name of the shutter. Try taking it out of the case and look for embossed leather on either side of the lens on the front, on the door, or on the back. Also open the back cover and look in the film holders for any indicating marks. Other places are on the top metal plate, on the bottom of the camera and on the inside of the back door. Here's some else with the same camera looks like and the same problem identifying it.
Yours might be a variant (it could just be an early model) of the Dacord Record Royal with a Vario instead of Prontor shutter.
(apologies for linking to camerapedia) http://camerapedia.wikia.com/wiki/Dacora_Record_Royal
This is not a lens with 1.56 wide open, but 1:5.6 (f/5.6 nowadays). Anstigmtas a three lens systems. You should get decent results if stopped down to f/11.