19?? Canadian penny struck through grease 1 1

[Hinkle]

Hello everybody, I'm thinking this is a 1983 but also has no 12 sided edge. And also weighs 2.5. I thought maybe a 1963 but they weigh 3.24. My question is, instead of a struck through grease die, is this a possible dryer coin. I'm not sure but the reverse looks a lot like that. Any help would be helpful on this one thanks. 

[J P M]

Maybe it weighs less do to loss of copper ?

[Oldhoopster]

It looks like a dryer coin.  Got stuck in the gap between the rotating drum and outer wall.  Frequent tumbling and bumping around deformed the metal

 

http://www.error-ref.com/dryer-coins/

 

Error-ref includes a link to this excellent explanation 

https://www.coincommunity.com/forum/topic.asp?TOPIC_ID=143863