I think signed and aged on the left? It looks really, really good!
Do they really vary in colour and burst pattern so much? :wow
To answer your question...the one on the left is actually Aged #12, the Sgined/Aged #43 is on the right.
As for the color variation, I have heard that Gibson did the Signed ones in 2 different batches...so their formula in mixng the dye might have changed...