Posted By:
RobertSI know the big grading companies have graded postcards that appear either in the SCD big book by Lemke or the Beckett guides. Of course, stadium postcards aren't in either book, so I'm not sure.
That said, I'm not sure how much PSA or SGC knows or even cares about stadium postcards. As far as I can tell, your card has never been included in any of the lists of many, many Yankee stadium postcards published by those who issued stadium cards in the 1920s-50s -- Haberman, Manhattan Postcard Co., Mainzer, Acacia, etc.
By the way, your card features the logo of Manhattan Publishing Co.
Your best bet may be to contact Ballpark Postcard Newsletter (BPN), or the Stadipex group (stadium postcard collectors).
BTW, where did you get your card? BTW, where did you get your card? Did you get it from the same place as the modern one you posted about two days ago? -- http://www.network54.com/Forum/153652/thread/1135999429/last-1136000092/Need+help+identifying+this+Walter+Johnson+postcard>--