It is a 1974 reel.
The bottom reel foot should say 74XX02.
The XX would likely be either an 02, 03, 04, or an 05. There is a very remote chance it could be an 09.
The clues are the design of the 5 star drag (this is the biggie) and the front of the line guide. To see in person I would be able to tell if the color is gunmetal blue or the more silver grey, which would then allow me to pinpoint the XX numbers more exact.
The handle is also a bit helpful, but at the same time confusing. It looks original, but, is the silver pin which connects the black knob to the grey handle rounded or flat? If it is rounded, it is original. If it is flat, it has been replaced.
This then brings me to a second conclusion. If the serial number is not what I have stated, and the silver pin is flat, I would have to conclude the reel has been re-built (it is not correct) and to a collector, only worth the parts to be taken out of it.
Without the black case and the box, my guess would be this reel is worth about $150.00 US or so (give or take depending upon how desperate the collector is)
I am always looking to add a new reel to my collection, so if you are ever interested in parting with it, let me know. I do have 2 reels in my collection like this one, but a variation on the serial number which I may not have would interest me (my goal over my life is to try to get one of every 6500 series reel from 1972 to 1980 with every foot variation I can).
A nice reel, but the scuff marks do take away from the reel's overall appeal, and thus value.
Fish Assassin, let me see the reel with more data and I will let you know what you have.
I have many of the little instruction booklets, and they do not always go with the year of the reel.
The 1976 booklet was the most common one, and was used with almost all 04 production series reels made form 1976 up to 1980 without any changes.
Dano