Welcome again!
Regarding your 1947 ML cent, that's quite a die rotation, also known as "rotated die error".
That sounds about 90 degrees--which is significant.
The other coins with the blobs of metal sound like die chips. It would be great to see any photos you might have. 
Regarding your 1947 ML cent, that's quite a die rotation, also known as "rotated die error".
That sounds about 90 degrees--which is significant.



















