Opel Omega first registration ́97: What type of equipment/special model?

Dear Opel friends! Actually, I am active in the 190s. But soon I will sell my father’s Opel Omega and need your help. I think the Omega could be a special model or an upscale equipment variant. Of course, I would like to specify this when I sell it. How do I find out if this is the case? Maybe someone among you can already determine the model based on the following details. Here the details as far as they are known to me sin d: Type: Opel Omega V6 2.5 HP: 170 EZ: sometime 1997 Drives: Hand-operated 5-speed Wheels: 15 inch Original-Opel Wheels (tires: 205/55 R 15) Automatic climate control (digital displays) Interior equipment: POlster grey (no sports seats), reading lights in the rear, root wood decor, glass sliding roof, 2 airbags A type plate is nowhere attached Thank you for your help Greetings Bocarosso