Date my Fender!!!

Hello,

Based on these numbers what year was my Fender Deluxe Reverb amp built? I bought it a few years ago and the guy told me it was a 1972. Based on some research I have done, I think it was built in 1973 or 1974.

Here are the codes starting with the power transformer:

606334
606302
606425
606428

 

That's how I read it also. 1974

Now the speaker is a Utah with the code: 328502

So does that mean it was actually built in 1975?

Thanks Old Tele Man!