CREATE TABLE table_name_88 (mintage VARCHAR2, weight VARCHAR2, theme VARCHAR2)

What is the Mintage of the 12.61 g Weight Ruby-Throated Hummingbird?
SELECT COUNT(mintage) FROM table_name_88 WHERE weight = "12.61 g" AND theme = "ruby-throated hummingbird"
SELECT COUNT("mintage") FROM "table_name_88" WHERE "12.61 g" = "weight" AND "ruby-throated hummingbird" = "theme"