'Heerby' was a brand name of Kasuga musical instruments Mfg. Co., Ltd.
Les Paul models LC800, LS-700, LS700G, LS-500
ES-335 models SA-900, SA-700, SG models SG-600, SG-480
Stratocaster models SE-700, SE-600, SE-500, Telecaster model TE-500
Precision bass models PB-700, PB-550, Jazz bass models JB-800, JB-600
Rickenbacker 4001 models RB-800, RB-600
No date of issue, but perhaps late 1970's.