Maybe somebody moved it to a corner with a Triple Word Score.
This comment made it into the NY Times!
http://www.nytimes.com/2011/07/16/nyregion/sign-in-queens-marking-birthplace-of-scrabble-is-coming-back.html“I think everybody believes it was either stolen or removed intentionally,†said Daniel Karatzas, a member of the Jackson Heights Beautification Group and an author of a history of the neighborhood.
On a neighborhood blog, one person suggested it had been moved to a corner with a triple word score.
July 15, 2011
For a Bereft Street Corner in Queens, a Red-Letter Day
By SYDNEY EMBER
The dominant physical presence in Jackson Heights, Queens, is the elevated No. 7 train over Roosevelt Avenue, but many residents have become familiar with a couple of smaller, whimsical neighborhood features.
There is the bronze penguin sitting on a rock on the 75th Street median. And there is — or rather was — the street sign that commemorated Jackson Heights as the birthplace of Scrabble.
The brown street sign, in the style of signs in historic districts, used to mark the intersection of 35th Avenue and 81st Street, near where a former architect named Alfred Mosher Butts devised the crisscrossing word game in 1938.
The sign denoted the Scrabble values of its letters, like so: 35T1H4 A1V4E1N1U1E1.
People in the community were proud of the sign, erected in 1995, but it mysteriously disappeared in 2008.
(click link above for full article)