Those are the signature hummingbird/ dove pickguards that Gibson/Epiphone has.
Short of customising your own, or buying some replicas, you won't be able to find one.
Anyway, I've never bothered too much about pickguards on my acoustics. Especially the large ones, I find that it stifles my top.
Also, I don't like how opaque pickguards leave a tan mark on my top when I decide to remove it to change to something else.
For me, as far as pickguards are concerned on acoustics. The smaller and thinner the better.
I'm using one of those thin, tear-drop shaped transparent ones. Protects my guitar, but with minimal intrusion everywhere else.