Pennsylvania (USA) pressing plant/manufacturer active from late 1996 to 2003, prior to which it was known as Specialty Records Corporation. As WEA Manufacturing, Olyphant (abbreviated "wea mfg. OLYPHANT" in the CD matrix, and here on Discogs) it operated until around Oct 2003, when it and its parent company were sold to Cinram and became Cinram, Olyphant, PA.

NOTE: Although the presence of "wea mfg. OLYPHANT" in the mirror ring definitely indicates a disc was glass mastered at this plant, it does NOT necessarily indicate it was pressed there. Please see the WEA Mfg. Commerce and Cinram, Olyphant, PA pages for more details.

LCCN numbers:
Since around 1996, WEA Mfg. Olyphant has assigned its own catalogue number in the matrix of CDs and DVDs manufactured at the plant. These catalogue numbers begin with W, X, Y or Z, and are generally 4-6 characters long. These strings only may be entered as catalogue numbers for WEA Mfg. Olyphant in LCCN fields. The first letter corresponds to the laser beam recorder used to create the glass master, and thus it always corresponds to a particular mastering SID code.

Vinyl test pressings with "Test Pressing from WEA Manufacturing" on the labels belong to WEA Manufacturing.

More info about Olyphant catalogue number sequences and it's aproximate date here: https://www.discogs.com/forum/thread/699750#7296812