Can Double Die be straight over-lapped?

Here are some pictures of my latest doubling penny, not sure if it is Machine Doubling or true DD.

 

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Reverse Doubling on 1981 Penny

I found my first Reverse Doubling today and was wondering if it indeed Double Die. Here's some pictures.

 

Canadian Penny found in a roll today

I also found a Canadian Penny in excellent condition and on the back is a bird flying and the dates are 1867-1967 across the bottom... I guess a Centennial Penny. Is it worth much?

 

No, not unless it's a real high grade. Prospector, go here for your Lincoln doubled dies and varieties: www.coppercoins.com/. Click their search engine and type in a date and mint mark. You can look up pictures of the known doubled dies and varieties, and it's intuitive and simple to use. It's a great place to start if you're needing to see for yourself what some of these things look like.

 

it has the stair step look of mechanical doubling, unfortunately not a doubled die

 

#1)
It is doubleD die.
#2:
The second picture is strike/machine doubling.

I don't see anything in the first group.

 

The Canadian

Here's some pics of the Canadian I found in a Roll