Geomin bar styles

Discussion in 'Silver' started by bordsilver, Jan 10, 2013.

  1. bordsilver

    bordsilver Well-Known Member Silver Stacker

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    In the same vein as GoldPelican's Perth Mint bar style's thread, I thought I'd start one for Geomin. Information is very sketchy so will try to update as others post anything they know.

    History:
    An Australian mining (to be confirmed) and refinery who produced cast silver bars of various sizes in the late 1970's (and potentially early 80's). No rounds seem to have been produced. Gold cast bars were also produced but examples seem to be very rare (have only found a few examples to date).

    Both metric and troy ounce bars were produced and ranged in sizes from ~250grams to 250oz. Silver bars were either 999 fine or 999.9. So far all 250g bars I have seen are three nines, while all other bar sizes were four nines. It is less clear about the gold bars, but one was 995.8.

    Suspect most bars went to jewellers or industry and have been melted. Based on the serial numbers my rough guestimate is that they made around 6000 silver bars in total with a total weight of 4-5 tonnes.

    All bars have the Geomin hallmark a map of mainland Australia (without Tasmania) with GEOMIN written inside. All bars seem to have had serials numbers with the first letter indicating the product range. It is possible that many remaining bars are from the 1977 Christmas release which came in blue velvet presentation boxes. The 1977 Christmas range have two stamps Geomin and Bullion Sales Christmas 1977.

    Metric bars:
    250g Serial numbers Gxxx 999 fine. Highest serial number found to date = G1158 G1244. This range does not have "Silver" stamped on them.
    500g Serial numbers AGxxx 999.9 fine.
    500g Serial numbers Sxx 999.9 fine. Dual stamp Geomin and Bullion Sales (represented by vertical BS) Christmas 1977
    1000g Serial numbers AGxxx 999.9 fine

    600g One site sponsor has told me they recently sold a 600g bar (with papers). No other details. Unknown if this was an overweight 500g.

    Troy ounce bars:
    10oz Serial numbers Axxx 999.9 fine. This range does not have "Silver" stamped on them.
    10oz Serial numbers Rxxx 999.9 fine. Does have "Silver" stamped on them. (Highest known serial to date = R168)
    50oz Serial numbers Mxxx 999.9 fine, Axxx, and Bxxx confirmed
    - 50oz with serial number Bxxx with 99.98 fine confirmed
    100 oz Serial numbers A,B,S and AGxxx confirmed unknown fineness (a bar with Mxxx serial was listed in the text on an auction, but no photo)
    250oz Serial number ??? 999.9 fine (details from the listing but can't read from the photo)

    Gold:
    So far have only found:
    2.51oz bar (cannot read the Serial number or fineness)
    2.50oz bar = M73 (996.6 fineness)
    5.03oz bar = A118 (997.2 fineness)
    10.03oz bar = M285 (996.9 fineness)
    and a 1000.2 gram listed as gold being 995.8 fineness with serial number M991 (note that the M series was used for the silver 50oz).


    Edit
    As discovered in Post #20 it seems the serials are rough guides only with respect to weights with A, B, S and AG used for the 100oz weights. Have since read elsewhere that larger sizes were far more common than the <10oz sizes.
     
    Last edited: May 23, 2018
  2. bordsilver

    bordsilver Well-Known Member Silver Stacker

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    With respect to the odd weights I found this comment on the net:
     
  3. bordsilver

    bordsilver Well-Known Member Silver Stacker

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    Attached Files:

    Last edited: May 31, 2018
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  4. bordsilver

    bordsilver Well-Known Member Silver Stacker

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    500g Serial numbers AGxxx 999.9 fine
    AG681 = 497g
    AG884 = 494g
    Geomin_494g_AG884.jpg

    Geomin_494g_AG884_back.jpg
     
    Last edited: May 31, 2018
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  5. bordsilver

    bordsilver Well-Known Member Silver Stacker

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    Geomin dual stamped Christmas 1977 bars in original blue velvet case 999.9 fine

    Here's a copy of the newspaper advert
    [​IMG]
    Geomin_1977_Christmas_Series_Advert.jpg
    500g Serial number Sxx
    S38 = 504g
    [​IMG]


    1000g Serial numbers AGxxx 999.9.
    [​IMG]
    Geomin_1977_Christmas_1004g_AG968_b.jpg
    Geomin_1977_Christmas_1004g_AG968.jpg
     

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    Last edited: May 31, 2018
  6. bordsilver

    bordsilver Well-Known Member Silver Stacker

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    10oz Serial numbers Axxx 999.9 fine

    10.16 oz A587 999.9 fine

    Geomin_10oz_A587.jpg

    10.20 oz A494 999.9 fine

    Geomin_10oz_A494.jpg
     
    Last edited: May 31, 2018
  7. bordsilver

    bordsilver Well-Known Member Silver Stacker

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  8. bordsilver

    bordsilver Well-Known Member Silver Stacker

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    Other silver bars:

    100.24 oz Serial number ??? unknown fineness (details listed on an auction, no photo)

    250.26oz Serial number ??? 999.9 fine (details from the listing but can't read from the photo)
    [​IMG]
     
  9. bordsilver

    bordsilver Well-Known Member Silver Stacker

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    Gold

    2.5oz loaf Serial number = ??? unknown fineness
    [imgz=http://forums.silverstackers.com/uploads/6824_geomin_gold_25oz.jpg][​IMG][/imgz]

    1000.2 gram listed as gold being 995.8 fineness with serial number M991 (note that the M series was used for the silver 50oz)
    [​IMG]
     
  10. Aurora et luna

    Aurora et luna Well-Known Member Silver Stacker

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    Here is a pic of my 253grams bar
    Serial no G35

    [​IMG]
     
  11. Lunarowl

    Lunarowl Active Member Silver Stacker

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    246g, #G1145 :)

    [​IMG]
     
  12. au1pt2rh3pd4ag5

    au1pt2rh3pd4ag5 New Member

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    Would *LOVE* to get my hands on these! This is quickly becoming my new favorite SS thread :)
     
  13. Ossie

    Ossie Member

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    A couple photos of the Geomin gold bars, we have 3 available.

    [​IMG]
    [​IMG]
    Source:
     
  14. bordsilver

    bordsilver Well-Known Member Silver Stacker

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    ^ Mmmm! Nice :D

    Does it specify the fineness at all?
     
  15. bloomst

    bloomst Well-Known Member Silver Stacker

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    There's one on ebay atm...bidding is already at spot+abit. If someone win from here...please post a photo :D
     
  16. bordsilver

    bordsilver Well-Known Member Silver Stacker

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    Wow! It's an antique. I've never seen one without a letter in front of the serial. It is interesting that it is marked with both the Bullion Sales and Geomin logos like the Christmas bars. I wonder if they initially started that way (ie as some sort of partnership) or if that happened towards the end.

    Bar8_9354750191_3cd9976fda_o.jpg

    Bar8_9357525920_8a24c08b31_o.jpg

    Keep it coming guys. This is an Australian company that should be in the living memory of at least one person. Hopefully we can get some more info before it's gone forever.
     
    Last edited: May 31, 2018
  17. Ossie

    Ossie Member

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    the ones we have are makred 996.6FG
     
  18. goldpelican

    goldpelican Administrator Staff Member

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    The "OZS" stamp matches Type A from the Perth Mint.

    [​IMG]
     
  19. volrathy

    volrathy Active Member

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    Is that bar number 4 ? bar number 4 thats amazing
     
  20. Lunty

    Lunty New Member Silver Stacker

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    4 x 100ozs

    [​IMG]

    AG145- 100.34
    S698- 100.10
    B124- 100.12
    A200- 100.25

    Thanks bordsilver for this thread. :)

    Lunty
     

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