This poor old remnant of a font is likely pretty old. Face and manufacturer are unknown; note the stylized A, H, P and S. For better or worse here it is—what you see is what you get.
(While metal type is designated by point size, wood is traditionally described by the term “Line”, with a line being equal to one pica. Thus, 20-line type like this is 20 picas in height, or about 3¼ inches. Good for BIG posters!)