First time posting to this forum and I hope I picked the right one.
I posted a similar post on another forum and got some good feedback.
I have a 1977 1 cent that appears to be struck on a blank of brass or bronze.
I think a genuine mint error. I suspect a leftover blank from the striking of another countries coins.
This is what I know:
Subject coin is golden in color
No evidence of being dipped or otherwise altered in any way
Obverse has a cloudy copper area in one area (oxidation...)
face is golden in color
1977 Canada 1 cent is copper in color and struck in an alloy:
98% copper, 0.5% tin and 1.5% zinc
RCM struck the 1 cent anniversary of independence (1966-1976)
for the Barbados government in 1976 http://www.coinscan.com/for/foreign.html)
The Barbados 1 cent coin was struck in bronze.
The 2 coins - the 1976 Barbados 1 cent and the 1977 Canada 1
cent are approximately the same size in
Both coin relief and raised elements (maple leaf etc.) are very
rough and not smooth as found in the correct 1977 1
The strike seems to be relatively crisp and clean
The specifications are from official sources:
Measure Subject Coin 1977 Canada 1 Cent(1) 1976 Barbados 1 Cent(2)
Blank material -unknown -98% copper, 0.5% tin and 1.5% zinc -bronze
Diameter: MM -19.15 -19.08 -18.861
Diameter: in. -0.754 -0.751 -0.715
thickness: mm -1.57 -1.5 -1.565
weight: grams -3.2 -3.1 -3.11
Notes: These measurements for the subject coin were taken using reasonably accurate tools. At best these measurements are approximate.
(1) Statistics from https://www.coinsandcanada.com/coins-pr
(2) Statistics from https://currencies.fandom.com/wiki/Barb
That is what I have ..... the alignment does not work in the post preview...hopefully you can extract the info. Table is 3 x 5 and data points separated by -
The edge is smooth and the rim seems to be doubled?
The only thing I can think of as a possible explanation is:Hypothesis:
In late 1976 or early 1977 the RCM stopped producing the 1976 Barbados 1 cent coin and began striking 1977 1 cent coins. A blank from the 1976 Barbados 1 cent coin, in bronze, was struck with the RCM 1977 1 cent dies and distributed for circulation.
I welcome your comments and alternative explanations or anything that might help identify the coin material..
I suspect I will have to submit this to a grading service to find out if it is legit.
Thanks in advance