So, i got a collection of Coins, and i learned about original luster that acts like a clock when the light is reflected, all my Coins have been cleaned in the past, including ones that have dirt on them. I talked to a Guy who know a Lot of numismatics, he said: most classical Coins and medieval ones have been cleaned in the past, might have been cleaned even 500 years ago or 1000 years ago, that people in the past did not cared about luster or patina, he said that more that 90% of Coins in the market were cleaned or polished at some point, is that true?
Also, a little question, does Coin that were polished in the past, when you polish one, It Just takes the dirt, patina and luster out, right? Or does It also makes the Coin lose metal and Weight?
VID_74810325_025803_929.mp4
As you can see from this video, my trajan denarius has dirt, but he said "It probably has been cleaned and perhaps It was lost in the dirt and found again, Its Impossible to know"