The term “uncut sheet” refers to, usually, a full sheet of baseball cards as it was printed and created by the manufacturer’s printer, before the sheet being cut into individual cards and inserted into packs. The following link shows an example of a 1964 Topps uncut sheet.
A high series card is one that was released in a later series of baseball cards, for one year, with the numbered cards being the higher ones in the set. Cards were released in several series with the later series usually distributed in less quantity than the previous, lower series. Since these high series cards were generally distributed in less quantity, they are rarer, and therefore usually more valuable.
sources: psacard.com
A “Goudey” card is one released by the Goudey Gum Company, most likely in the years 1933, 1934 or 1938. According to wikipedia.com, Goudey was “the first American company to issue baseball cards with each stick of gum.”
1933 Goudey Babe Ruth
A card which is referred to as being in excellent condition (sometimes abbreviated as EX), is considered to be in an at or above average condition with respect to the card’s condition at time of release.
An excellent condition card would receive a grade of 5 from PSA, or a 60 from SGC.
