MOTM

Hi group,
I just recieved my oscilliscope in the mail yesterday. It is from the 
60's i think, tektronix rm17. Got it off ebay for 50 bucks. It works 
fine I think, but will it be accurate? Did I waste my money? I do 
like all the glowing tubes though. I've got a pic in the file.

Thanks for your help,
Joseph Casbarian