There are only two British Queen Victoria Shilling coins that rate a "rare" classification, and that depending on who you choose to listen to.
A variant of the 1861 Shilling. The reason for the rarity is not clear.
Some 1863 Shillings have the "3" stamped over a "1".
Should you have one of these "rarities", a reputable coin dealer will be able to assist you with identifying it properly and giving a valuation based on inspection of the coin.
The 1860 bronze (not copper) Penny of which there are 16 variants, only one of which is considered to be extremely rare.
Wreath of 16 leaves, all other have 15 or 17 leaves.
The 1863 bronze Penny with a slender 3 is considered to be extremely rare.
The 1863/1 bronze Penny (3 over 1) is considered to be extremely rare.
Copper large issue (young head not bun) of 1860. VERY rare.
a penny black
"Bob" was the slang term for a Shilling. There were 12 Pennies to the Shilling.
In an auction house.
1 pound = 20 shillings, 1 shilling = 12 pennies so 1 pound = 240 pennies.
Because people do collect them.
1937 penny
Wheat pennies from the 1940's and 50's are 5-10 cents.
about 2 pennies a week
Not really, as there are billions of them already in circulation.
Not any time soon. There are billions of them in circulation.
The sauce has acid in it, which cleans pennies. Keep in mind that a penny that might be rare and valuable has little value if it has been cleaned.
Generally, coins are valuable because of the price of the metals they are made from, but if you mean in a collectible way: One thing that makes a penny valuable is the date. They older the coin usually the more valuable. Another thing is the mintmark. For example 1943 pennies with a "S" mintmark are more valuable than pennies with no mintmark. Another thing is the condition of the coin. The less ware it has the more it's worth.