Need Assistancance With A Few Pennies

Got Three More Coins I Cant Disregard Without Knowing For Sure If Its Just PMD Or Not.

1942 & 1943 - There Are Some Kind Of Die Markings On Both Of These Coins Which I Have Never Seen Before. On The 1942 Above The Right Side Of The Leaves You Can See What Looks Like An Extra Part Coming Off The Leaf That Is Not Normally There And A Few Other Spots Similar Around The Leaves. Also Spine And Bud Are Both Much Thicker Than Normal.

The 1943 Also Has Similar Die Marking Above KG And What Is That Mark Behind Georges Head Just PMD? Is This A Partial Collar Error Or Just Misaligned Die?

Now Cause I See It On Two Of My Coins I Can Guess These Are Not Error Coins. I Am Thinking This Happens On Severe Deteriorated Dies So If Anyone Would Not Mind Explaining It To Me Id Be Very Grateful.

Lastly The 1967 Coin I Am Wondering If Has Been Struck More Than Once Or Is This From A Machine Or Something. I've Seen This Kind Of Damage On Quarters And Loonies But Never Pennies.