An 1877 British Penny looks very much the same as all British pennies issued from 1860 to 1894. They are made from bronze, are 30.81 mm in diameter and weigh 9.453 grams.
The obverse has a left facing Queen Victoria with a laurel around her head and her hair tied in a bun with the words - "VICTORIA D: G: BRITT: REG: F: D:" which is heavily abbreviated Latin. The literal definition is - "Victoria by the Grace of God, Queen of the British territories, Defender of the Faith".
The reverse has the seated female warrior Britannia wearing a helmet, carrying a trident and shield, who is personifying Great Britain.
The words ONE PENNY and the year also appear on the reverse.
See the link below for an image of an 1875 Penny.
All British Pennies from 1982 to 2008 look pretty much the same as the Penny shown at the link below.
A 1927 British Penny looks very similar to all British Pennies minted from 1911 to 1936, other than the date. See the link below and look for the 1936 Penny towards the bottom.
If you mean an 1877 US Indian Head cent, 19 mm, the same as all cents minted since Large Cents were discontinued in 1857.If you mean an 1877 British penny, 30.8 mm.If you're wondering about an enormous (~100 mm) "Indian head penny" dated 1877, please take another look! It's a coaster that sells for a few bucks in gift shops. 1877 is shown because it's the rarest year for a genuine (and much smaller) Indian head penny.
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All British Pennies from 1895 to 1901 are near identical. Pictures of a specific coin are difficult to come by. Frequently you should be able to find one on eBay, but the picture is withdrawn after the coin is sold. See the link below for an image of an 1897 British Penny.
Other than a very few minor differences, the 1914 British Penny is very much the same as all George V Pennies issued from 1911 to 1936. See the 1936 Penny at the link below.
It looks exactly the same as the 2010 or 2012 penny.
The US coin looks very much like a modern US penny
It is silver
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It looks exactly like the US cent.
Pictures of a specific coin are difficult to come by. Usually you should be able to find one on eBay, but the picture is withdrawn after the coin is sold. See the link below.