Can MD Be Multi-Directional?

Hi Ericwats. This is a good question and one that I have though about over the years myself. There are numerous forms of what are considered "worthless doubling", more so than I imagined until I once ran across a post, and a link supplied, by John1 awhile back (see link below). Even though "rotational MD" is not specifically mentioned in this link (maybe more akin to "Single Strike - Flat Field Doubling" as described in the link), I can definitely see or theorize how it can occur to the devices/letters around the perimeter of a coin. If either the hammer or anvil die becomes loose just a tiny bit and there is any rotation or tilting whatsoever during the strike, then I can see how it could create a continuous same rotational direction clockwise or counter clockwise style of MD. This may be pretty basic knowledge but just wanted to throw this out there. Here's a good tutorial link for numerous forms of doubling, both worthless and valuable. I believe you will have to copy and paste it into your browser for it to open the link.

file:///Users/ga/Desktop/Other%20Fo...g.webarchive

Thanks guys, this one really puzzling me because it did not fit with my understanding.

I agree with coop above. To keep a coin is a decision for it's owner. To decide if it has collector value, you have to research that question yourself. Checking ebay's sold listings might provide some assistance in assigning value by locating similar coins.

Machine Doubling can be rotational or translational. Translational (sideways) Machine Doubling travel in as many as three maximally different directions on the same face. I have not yet encountered bi-directional rotational Machine Doubling.