Side by side comparison
Headstocks
I love the '40s style headstock with the banner - and notice how the 1950s decal has the dot over the 'i' misplaced ... every decal I've had on a Junior or J50 has seemed to have that misplaced dot!
Bridges
You can see the immediate difference is in the darkness of the wood - but also the way in which the sides of the bridge are carved ... a little more curve and narrower around the saddle compared to the true vintage.
Bracing
First off ... you can see the back cleats on the 1950 ... the side effect of thin wood and the ageing process!
But what's interesting is that the True Vintage has heavier bracing than the 1950 - you probably can't tell it that easily from the photos, but the back bracing is thicker and heavier. Running my finger under the top the bracing seems the same (at least in what I can feel) - both have pretty similar top bracing. But the back bracing is definitely thicker.
Weight wise both feel the same - or as close as makes it impossible to tell the difference.
The colouring of true vintage Gibsons tends to vary in my experience - this TV is a little pale to my eye ... there's a yellow tint, but the lighter parts of the burst have a brown tint rather than the yellowing that you get from a vintage J45. Otherwise the shading is quite similar in depth and pattern.