Possible Double Date and umm not sure on other...

Here are two coins I have found so far out of the 2 boxes of Canada pennies I have been searching through. When i got the 2 boxes they were still sealed and all the rolls were shotgun sealed on both ends (not sure if that is correct terminology or not) from Coinage Distribution INC. Nice assortment I think.

Here is the Double date 1979 Penny in Question. It has doubling of the last nine and it looks like doubling on the right side of the last A in CANADA.

Date side of coin:



Face of coin...no noticeable doubling here:




This next coin looks like another coin was struck on while this coin was in the way. Looks like some lettering on the first zero and beading on the left ridge.



This is the front of the above coin. Notice the lettering on the left side and denticles(?) on the top ridge.



Any help identifying the type of errors and if their is any value in them. If this is common errors I will not waste my time searching for them with my 4X magnifying glass.

Thank you in advance and if additional pictures are needed let me know.

cladhunter13

 

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I see where you are talking about on the first coin though I dont want to say what it is because I dont want to misguide you.

The second coin looks like a Struck through Error: Occurs when a foreign object lies on top of the planchet and leaves an impression of itself when struck into the coin. A wide variety of objects have been reported including grease, string, cloth, hair, plastic, bandaid, staples, etc.

Found the information from http://www.jimscoins.net/error_coin_examples.php

 

The first coin is strike doubling. Here is a great article about the differences between strike doubling(which is not a variety) and true hub doubling.

http://hermes.csd.net/~coneca/content/StrikeDoublingFlyer-PDF.pdf

The second coin is post-mint damage. Looks like someone hammered one coin against another.

 

I agree with Jallengomez. MDD & Post-mint Damage.

Welcome Cladhunter13, mechanical doubling damage is very common with US coins, and I would suspect similar with Canadian coins. On the second coin, to give you more insight, notice how the letters are incluse rather than raised and also reversed. Someone tried to make it appear an error by using another cent as a die and striking it to make the impression. If it was real, the letters would be raised and in correct direction.


Keep looking, it gets easier
Jim