National? That's short for National Panasonic, but that name hasn't been used in the US since my mum was a kid. Suppose Matsushita kept the name for other markets. Anyway, I'd say 83-85. It looks a bit less like a brick than second-gen post TPS-L2 players, but is still in silver. Auto-reverse hints it might be even later than I think. That feature started debuting on more typical portables in the mid 80's. Basically, it's vintage, but not old enough for me to salivate too much. How many batteries does it take? Looks like it might run on three, not two. That hints it's either closer to the early 80's, or typically Panasonic lower-middle grade.
