Ahhh, a "bluegrass" variation! Very nice, those are amongst my favorite printing goofs and yes, they're very seldom seen. Mark Macrae told me a little about those about 20 years ago when I was putting together my first d311 set. I think this makes the third example that I have seen, overall. "Bluegrass" variations also have turned up in the 1910 T212-2 Obaks Series 150 cards. I believe there are about 6 total with the rare blue grass and other strange shades on the card.
I won one of these back in 2010 off of Ebay after having been on the lookout for them for several years at that point. Both Leon's Maggert and my Van Buren seem to have very similar shades of grass AND purples/pinks in the sky instead of orange. Here's a link to the thread that I started about that card -
https://www.net54baseball.com/showth...ight=bluegrass
d311vanb (1).jpg
I'd say for the Van Buren and Maggert, there's definitely a yellow pass that got missed. Notice the sky in both cards has some interesting pink shades, so it's not just the grass with a unique color.
Another interesting tidbit - even though there's no other visible oddity going on with them, there are actually a large number of d311s out there that are handcut. Many have narrow borders, but you'll see some like the Maggert and Van Buren from this thread that have oversized borders. This is another item in common with the Obaks since the 1909 set had nearly half the cards handcut!
The only other "bluegrass" variation I've seen from the d311 set was this one I posted here -
https://net54baseball.com/showthread.php?t=248419. The grass did not seem to be fully "blue" in this one so maybe the yellow cartridge hadn't run out fully yet
