Has this coin been cleaned?

I was told this is an au 1909 s/s peso. Based on the photos, do you think this coin has been cleaned? Sorry the photos aren’t the best but you guys are good at this.
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I was told this is an au 1909 s/s peso. Based on the photos, do you think this coin has been cleaned? Sorry the photos aren’t the best but you guys are good at this.
![]
Comments
Best I can tell from those photos is a solid maybe
I am 100% certain that maybe is correct haha
I don't know but if it were mine I would remove all doubt and clean it.

A nice clean wire brush will take care of that (not)
I’m gunna say cleaned or environmental damage ( perhaps some acidic compounds).
I might scrub er up.
🎶 shout shout, let it all out 🎶
It might be from a stay in the ocean. I believe (not certain) that many coins ended up in the bay at Manilla during WW2.
If it has not been cleaned, it should be....
Well, at least a judicious acetone soak, then evaluate further. Cheers, RickO
If it's a valuable rare coin, it may be worth the cost of getting it professionally conserved and slabbed at one of the major grading services. If it's a low value coin, a soak in acetone wouldn't hurt it and may actually help it by possibly removing whatever is on this coin.
Worry is the interest you pay on a debt you may not owe.
"Paper money eventually returns to its intrinsic value---zero."----Voltaire
"Everything you say should be true, but not everything true should be said."----Voltaire
I would say yes in left field of both obverse and reverse (even a small area of coin cleaned makes it cleaned)
the parallel small scratches are the visible sign - a slim chance what I am seeing are die clashes (hit another die)
or die polish (mint sandpapered the die which causes RAISED lines in fields)
of course you can never be sure from a picture and some coins having both die polish and cleaning are confusing
Start with the acetone dip and go from there.
Wayne
Kennedys are my quest...
Try to look for hairlines under bright light and at a ~45% angle
She needs another round but this time put her in a airtight or get her in a holder if it’s not to late.
Hoard the keys.