Question about coin weight

Discussion in 'US Coins Forum' started by rhendricks2020, Dec 25, 2024.

  1. rhendricks2020

    rhendricks2020 Active Member

    So the Jolly Fat Man who wears Red and breaks into peoples houses once a year in the middle of the night every year stopped by and left a few trinkets laying around the house this year. One of which was a coin scale for me to get a better read on my coins.

    Naturally I read the instructions, calibrated the scale according to the directions, and used the provided 100g weight supplied for calibration.

    I weighed one of my Morgan Dollars, an 1880 and the weight came to be 25.36g. Looking at PCGS - it says normal weight should be 26.73g. I understand that coins "lose weight" based on how much wear the coin has seen. Does this coin appear to be more worn to account for the 1.37g difference? Or should I be worried that this coin isn't legit?

    The other Morgans I have weighed right in range of the 26.73g that they should be (+/- a few hundredths of a gram).

    Attached are the photos of the coin for your review.

    1880Morgan-B.jpg 1880Morgan-F.jpg
     
    alurid likes this.
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  3. Dynoking

    Dynoking Well-Known Member

    Can you post pictures of the edge?
     
  4. Pickin and Grinin

    Pickin and Grinin Well-Known Member

    Morgans have a weight tolerance of +- .5g. It is possible that your coin was struck on a rolled thin Planchet. Check the diameter.
     
    Spark1951 likes this.
  5. Mr. Numismatist

    Mr. Numismatist Strawberry Token Enthusiast

    That's normal. I just weighed two of my Morgan Dollars. One in Good condition (weighing 25.76 grams) the other in Very Good (26.05 grams).
     
  6. rhendricks2020

    rhendricks2020 Active Member

    Thanks for the info!
     
  7. KBBPLL

    KBBPLL Well-Known Member

    You could look at it this way - the thickness of a Morgan dollar is supposedly 2.40mm. Your coin is 5% light. 5% thinner/lighter would be a 0.12mm loss, or 0.06mm on each side. Six-hundredths of a mm is tiny.
     
    Spark1951 likes this.
  8. Spark1951

    Spark1951 Accomplishment, not Activity

    Yep. I agree. Taking into account the amount of wear along with a thinner than normal planchet and the accepted variance/tolerance allowed for the weight this seems like an authentic Morgan. Nothing about it indicates a fake.

    Looks like a nice 1880-O. But, because of the wear, you may have difficulties determining anything more than a basic VAM for it.
     
  9. GDJMSP

    GDJMSP Numismatist Moderator

    Not that much, weight tolerance for Morgans is 0.097 grams.

    upload_2024-12-26_7-57-27.png
     
    SensibleSal66 likes this.
  10. Pickin and Grinin

    Pickin and Grinin Well-Known Member

    Seems that google was of no help in this one. I thought that seemed like too much.
     
  11. rhendricks2020

    rhendricks2020 Active Member

    What is the book you are referencing? Seems like something to add to my library.
     
    SensibleSal66 likes this.
  12. SensibleSal66

    SensibleSal66 U.S Casual Collector / Error Collector

    I haven't checked this chart but it's what I usually pull out of my back pocket to show yawl. Click to enlarge..... Here it is....................................................
    US Coins, weight Composition and Tolererances.jpg
     
  13. GDJMSP

    GDJMSP Numismatist Moderator

    Coin World Almanac
     
  14. Barney McRae

    Barney McRae Well-Known Member

    That's what the literature says, but there can be exceptions. Got a Morgan in from fleabay a couple of weeks ago, I was highly skeptical. I weighed it on my scale, consistently weighed between 26.5 and 26.6 grams after 20 different tries. My scale is pretty accurate, uncirculated ones weigh 26.7 every time. I took it to the only respected coin dealer in town, he verified it as legit, and it weighed the same for him. He dragged out one of the pricey tester machines and made me an offer, even though I wasn't selling.:p I'm looking for that thread and will explain further in a new post.
     
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