Trying to identify my Aria Bass

[DeShark]

Hi all. New to the forum here. Been doing some searching online trying to ID my bass. Can't tell if it's an A-1910, 1931, or 1980. None are exact matches. I got it back in the 70's.. like 72 or 73 when I was a kid. Also got an A-1922 around the same time. No serial number. Made in Japan. Any help with getting a firm ID on it would be appreciated.

The neck pickup is gone. All I have is the cover plate. I am looking for a replacement pickup for it if anyone can help me find one. I'd really like to get an exact replacement to keep it all correct. Any help on that would be appreciated as well.

Thanks,
DeShark