One must match the chemical and concentration with the object composition, otherwise damage will occur. It is actually safer today than in the...
Any plastic or composite material coins ( some foreign,US old state tax coins, etc.) unless you test a damaged one.
Think of it as yourselves being young and thin waisted and over time you start to overlap your belt and become distorted :) Jim
Acetone should be OK, I would soak them overnight myself and then use a very very soft artist brush to just sweep over the stained area ( while...
I suspect you are correct about DDD in the area I see in photograph. Notice the raised lines that disappear under the letters, indicating a...
On 1943 cents, it is good to show the edge of the cent to see if replated. If edge is same as surface, it has been replated. If a dull grey steel...
Go to this page and then put your pointer on one and then the other of the first 2 copper oxides. One is red and one is black , combination ratio...
Xlrcable is correct, the scale is expecting 100g for calibration, and it should be directly on the scale pan and not in a weighing container....
The least expensive I have seen is...
The condition of the cent would make it around the price paid if not for the damage and verdigris corrosion. Jim
Gary , if you are asking about a coin , read above. If you are asking about a paper note, then it is possible as some were made, but there have...
And collectors should remember PVC is not the problem, the additive plasticizers to make them flexible and softer are the problem if they...
Before you use ammo cans ( original military or Fake Harbor freight type) sniff it and if any plastic or oily smell, do not use it as the gasket...
Lev99 if it is an electronic scale recently , check the battery date if included, otherwise use a good quality battery and follow the manufacturer...
Looks like a physical force on the top of the one, pushing it to the side. Maybe from a coin counter finger ( old type), or loose in a change...
The only gloves that seem available in some stores are the thin food handlers gloves, but should work for CRH....
Bob, if the reverse doesn't have a raised rim, it has been sanded or ground off. If it does have a raised rim but appears blank it would be...
Well, you can get something like this but rather expensive, https://www.scalesgalore.co/Rice_lake_Test_Weights_SS_500G_Metric_Sets.cfm They may...
It depends on the accuracy you desire and the range and resolution ( number of digits after the decimal point like 00.0, 00.00, 00.000, etc. and...
Do not expect acetone to remove the "speckles" as I fairly sure they are chemical reactions of the environment or handling. Jim
Separate names with a comma.
