hifi engine

Nordmende 3004 C Tuner Amplifier (1965)

I hoping that someone can help me find either an owners manual or a service manual for this 1965 Nordmende 3004 C Tuner Amplifier (Made in Germany by the way). I am into antique radios and stereos and such and have purchased this little gem in mint condition. I would just like to have a bit more information on it. I have also searched absolutely everywhere I know of but cannot come up with any information.

If anyone has any suggestions I would really appreciate it. Schematics and specs would be great!!

Thanks for you time.