help me identify this amplifier

I don't believe it is- I remember reading a review on TAS or Stereophile (early 90's)- 

Signal tubes are ECC83S

Here are pictures of the bottom

I agree with glennewdick- I believe the manufacturer had a printed tag on the back of the chassis that is long gone. I thought the tags had to be riveted...but not this one. 

thank you all for your help

to: muljo

You are CORRECT!!! thank you very much. I appreciate everyone's help. I do have the pair & I intend to list them soon since I no longer have the space