Plating Help Requested: KGV 1½d Brown - Potential Crown Flaw And Watermark Check

Good morning everyone,
I am currently studying a 1½d brown King George V stamp from my collection and would appreciate your expertise to help me correctly identify its plating features.
While examining it under magnification, I noticed that the cross on top of the crown is distorted (the left arm seems fused with the top arm, forming a white flaw, while the right arm appears normal). Additionally, the watermark on the back features a narrow/elongated 'A' that measures approximately 10mm.
Could anyone confirm if this specific combination of crown distortion and 10mm watermark is a listed variety ?
Thank you very much for your time and help!

I'd also check for the flaw 'white dot above last A of AUSTRALIA' to assist positioning this stamp. I don't have any reference material to hand.

I don't think that's a flaw. Looks like a small bit of paper stuck when scanning. It will probably blow or wipe right off.