2010 D Quarter Missing L In Liberty.

The L is from a Grease Filled Die. The reverse looks like MD.
John1

Yep, just a Greaser and not unusual.

Note the devices on "UNITED", how they are wider, that is from a partial fill of grease. The narrowest areas of those devices are fill with grease in the die, thus the wider/lower height of those devices. Machine Doubling on the reverse devices.

These are incuse on the reverse and they show Machine Doubling on the devices 70% of the time. Not always strong, but the DDO and the DDR on States and the ATB Quarters are on the center area of the obverse and reverses. Doubled earlobes:

Motto:

Center of the reverse designs are where to look for the DDR's on these quarters. To look anywhere else is a waste of time. All you find on the other areas are Machine Doubling and Grease Fill dies. LOL (you already know that though)

Look up the listing on Wexler's site to see where to look, and what to look for. On the MN reverse there are 176 different DDR locations. So read up first to know where and what to look for on these single squeeze doubled dies. They are what you expect to find. Same for the post 2000 dimes on the reverses. Look them up to see that you are looking in the wrong places to find the DDRs.

So take a look to know what to look for when you get tired of finding nothing.