Help dating a V4 cabinet

[kentiki]

I'm trying to date a V4 4x12 speaker cabinet that is for sale locally. The owner says he thinks it is all original and a mid-70s based on logo. I'm not sure. If I'm reading it properly the speakers are 70s, but wasn't the black grillcloth 80s? Any help would be appreciated. Also any comments regarding how this cab would sound with an early 70s V4B.

Thanks.

[coreyfyfe]

76/77. The speaker code 67-7651 indicates eminence speaker, manufactured the 51st week of 76, so the cab is likely a 77 unless the speaker was made shortly before the cab. There have been a bunch of threads about V4 cabs for bass. Many people change out the speakers as those are guitar speakers and may not handle a ton of bass being blasted through them.