Milk spots on coins before grading

[ChrisSilver]

I am just curios to know, if you send a coin to one of the grading companies to be graded and the coin has already got milk spots, does this effect the grading? I.e it can never be graded a MS70?

If that is the case surely it's best to send all coins to be graded before any possible milk spotting appears.

Or does it not effect grading at all?

[Agpanda]

I belive i read that milkspot dont effect the crading, but not sure.

[doogs]

Over on silver stackers this question has been asked. Apparently it will grade no higher than ms67. There are examples of coins graded ms69 with no milk spots that then go on to develop milk spots in the slab.

[Agpanda]

Here is mine,

 

[Pete]

Does anyone know how a coin is graded ?

In optics terminology you get scratch and dig numbers that are clearly defined.

You count the scratches, their length and depth etc but how do coin graders operate ?

 

What is the real difference between M70 and M69 and is it subjective to an inspector or a measure against recognised standards ?

Couldn't find any meaniful details on the web.

[doogs]

Here is mine,

I don't see any milk spots?

[Agpanda]

I don't see any milk spots?

all around the edges on tempel side, almost whole date is covered.

[Agpanda]

Does anyone know how a coin is graded ?

In optics terminology you get scratch and dig numbers that are clearly defined.

You count the scratches, their length and depth etc but how do coin graders operate ?

 

What is the real difference between M70 and M69 and is it subjective to an inspector or a measure against recognised standards ?

Couldn't find any meaniful details on the web.

A MS69 is perfect to the eye but have microscopic cracks or marks, a MS70 is perfect in x8 microscope.

[doogs]

all around the edges on tempel side, almost whole date is covered.

I see it now. I thought that was the holder at first. What a nightmare!

[Danny-boy]

all around the edges on tempel side, almost whole date is covered.

That is not good Bosse.

[TheBullionBoy]

To get rid of milk spots for maples and the like, just use a white eraser / rubber. Like 50p from Tesco. Then clean up with very soft wet cloth.

Obviously not if already slabbed, but I thought I'd throw that in just in case someone had a bunch of coins with milk spots.

[silversword]

If you get rid of the milk spots using the eraser method, can they come back, or will they be gone for good?

[TheBullionBoy]

If you get rid of the milk spots using the eraser method, can they come back, or will they be gone for good?

In honesty, I couldn't say. I probably sold them on or just recapsuled them and now I don't know which is which. I'd hazard a guess that if they do come back, it won't be for a while. I've only really had milk spots on some Maple Leafs. Erasing the milk spots might leave microscopic scratches (I'm assuming again) so if then being slabbed I don't know what the outcome would be. I only used the eraser on really badly milked coins. Last time I did, was probably a couple of years ago and had no need since, so maybe they don't come back or at least not as much........but don't quote me on that. I'm sure a scientician will put me in my place.

[silversword]

Might try it on a maple and see if any re-spotting occurs.

The coin in question is quite badly spotted, becoming apparent about a month after purchase when it went from being in a sealed bag in mint condition to an RCM tube, stored with silica gel.

After cleaning I'll keep it separated and see what happens.