VF wear, unusual strike, or ununsual planchet?

I know ownership adds a grade but was surprised this coin came back graded as a mid-VF.
Besides the glorious purple blue color my images also lack the blooming luster that covers the entire surface other than the very flat areas.
Other than wear could it not be an unusual strike due to unparallel dies like the 1794 US dollar or an unusual planchet that was thinner on the left side.
Note the weakness of the entire right side on both obverse and the reverse lettering and rim. Also reverse has a planchet void near the rim of the weak side.
Thoughts?
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Comments
Regardless, this is a nice coin, very desirable. I like it.
You could check the planchet thickness with a micrometer... if, in the non raised areas, it indicates a thin planchet, you might have it 'reconsidered' with that information. Cheers, RickO
graded silver coins (NEED TO SELL ASAP)
link below
https://photos.app.goo.gl/7bPCP787VCZCCKb67
I agree, VF and in need of conservation.
EDIT: I see nothing unusual about the strike or wear for an 18th Century coin. Additionally, there is no original luster on the coin. You are seeing a reflection from the "blue" film.
Respectfully, unless something is "eating" at the coin's surface, it would be better to leave it alone. It's already in a slab anyway.
I really like this piece. Last year of this king's 59 year reign.
Leave as is .Nice peace of history.
These coins were not struck with high rims designed to protect the coin from wear. They were often struck with high relief portraits that show wear more commonly than the lower recess areas. I see a nice VF coin. Too much wear for an XF.
It is also true that the planchet may not be even compared to the standards of a coin struck 100 or 200 years later. Just the way it was.
Let me show 2 coins from my collection from the same era to show how standards were different then. One a silver British crown and a copper from Russia. The Full Crown is in 35 plastic the 5 Kopeks is raw.
I would listen to grip and other opinions above.
I think that a mid VF grade, like VF-30 or 25, is about right for it. There is a fair amount of wear on the piece, and called it "EF" woudl be grade-flation in my opinion.
If you placed that coin obverse side down BIGAL the point of contact would be the flat spots on the portrait. This is what I mean by the high relief portrait. The lettering behind the head is "protected" by the portrait taking the wear first. Hence why the lettering looks like XF wear while the coin itself is VF wear.
Hope that makes sense.
Yes I agree that a fuller rim has protected the devices on the left while the lower relief on the right wore more quickly.
The coin doesn't look struck off center (or very little) and would guess there was not enough metal on that side to get a full strike with more of a rim
I don't disagree with the VF grade and plan on leaving it as is, the rich color just makes it too beautiful.