serial number help

[seizethymemery]

I recently bought a Charvel bass from Reverb and was hoping someone would help me with the serial number. I'm guessing it is from 1980 but ofc I could be entirely wrong

 

[4SG]

10 seconds of Googling says Charvels with a Ft. Worth address and 6-digit serial numbers were made in Japan from roughly '86-'90 and assembled in or imported to the US. The Texas address belonged to Jackson/Charvel's then-parent company, International Music Corporation.