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 Replies: 10 / Views: 81 |
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Valued Member
Canada
114 Posts |
At first I thought this might be a UK Woody but according to Numista it should be 100% Bronze so I'm wondering if this is some other kind of PMD. It is 30.8 mm and 9.2g so that seems fine. Hoping someone will educate me.  |
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Pillar of the Community
United States
901 Posts |
no clue here but guessing environmental from something acidic
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Bedrock of the Community
 United States
25605 Posts |
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100% Bronze Bronze is an alloy, not an element. The UK had issues with their bronze in 1921. We had a discussion about that within the last year or so. A search should turn something up. Here's one of mine that I posted then (12/2025).  Inordinately fascinated by bits of metal with strange markings and figures
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Valued Member
 Canada
114 Posts |
Thanks PlumCrazy814 and HondoB I'll look for the discussion
Guess it's a good thing I didn't choose metallurgy for my career can't believe I missed that
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Bedrock of the Community
United Kingdom
18007 Posts |
I am old enough to remember these pennies in circulation, and lots of early George V pennies were streaky. They were still common finds right up to Decimalization in 1971.
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Bedrock of the Community
United States
19237 Posts |
Yes, a metallurgical issue. Nice example!
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Valued Member
Canada
114 Posts |
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They were still common finds right up to Decimalization in 1971 Thanks NumisRob - guess it's a conversation piece then 1921 was the peak year in mintage of these coins at 129.7M |
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Valued Member
Canada
114 Posts |
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Nice example! Thanks ijn1944! |
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Valued Member
Canada
114 Posts |
Quote:
Yes, a metallurgical issue. ijn1944 do you know any more about the metallurgical issue? I haven't found HondoB's reference yet so maybe it was discussed there. I did find that there were striking issues with the obverse design of this coin that ultimately led them to modify the bronze alloy mix beginning with the 1923 issue. Other than that I haven't found anything. Was it a mixing issue or maybe the constituent elements were not of the correct purity that led to the streaking issues? Just curious if you know. |
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Bedrock of the Community
United Kingdom
18007 Posts |
These coins were plagued by 'ghosting' - the very high relief portrait of King George V could often be seen, inverted, on the much lower relief reverse. Maybe the alloy mixture was connected with the attempts to reduce the ghosting. No pennies were issued for circulation in 1923-5. In 1926 the effigy on the obverse was modified, and in 1927 the reverse was also modified and the figure of Britannia was slightly reduced in size. Finally from 1928 a much smaller bust of King George V was used, which finally stopped the ghosting.
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Bedrock of the Community
United States
74994 Posts |
Nice Improper Alloy Mix.  Errers and Varietys.
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Replies: 10 / Views: 81 |
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Posted Yesterday 3:26 pm
