The late part of 1963 was an important year for the SG, this is when the SG earned its own identity, they stopped calling it “les paul” and it also lost the “les paul” branded truss rod cover.
Some say that this is when the SG really took off, I’m actually not sure what was holding it back… but when you look at a 61 and a 64, the differences are obvious.
First, let me state that the 61 Reissue that we all know (and love) it is not period correct, the vibrola was a sideways one… the one that is used on the 61 Reissue actually came about on 63/64, this was a considerable change in design, the vibrola became more useful and stable.
So, what are the differences? Well… apart from the vibrola change, the neck is also different, the scale and amount of frets are the same, however it is no longer a 60s slim taper neck, it is much more C shaped, making it more like a “baseball bat” type of grip, this is similar to a regular production standard that you can grab off the shelves today.
The playability is great, I also own a 61 Custom shop and it also plays great… but the changes on the neck of the 64 certainly fit the SG well, in fact, the black SG that Angus uses almost exclusively on live shows is a 1964 which he removed the vibrola and painted black.
The finish is also quite different, the 61 has a much lighter cherry tone whereas the 64 is darker, which looks great with the vibrola.
In this particular example that I own, the pickups are also quite different, they are the same type… Custombuckers alnico III however the resistance is much larger, the 61’s bridge pickup reads around 6.9 whereas the 64 reads 7.8! It is much hotter and you can tell the difference when playing it, the neck pickup of the 1964 is also 7.8 and the 61 is 7.86, so much closer. Even though the bridge pickup is hotter, it still cleans up very nicely when the volume is turned down.
The feel of the volume control is also different, you don’t loose that much treble when rolling down the volume and the tone control is also quite nice to experiment with. I found myself for the first time being able to tame some of the brightness by just rolling the tone down, I believe this model has “black beauty” caps as opposed to bumblebee caps on the 61.
You can hear the 1964 in action here: https://youtu.be/J8UK_X6VTDA