When a font file lists prominently in its metadata (often in the name table ID 13 or as part of the OS/2 table’s code page range), it means that this specific font file only contains Western Latin glyphs . It is a subset font.
When using CSS @font-face , you can specify precise local font names. Knowing the full string allows you to target that exact version: arialnormal opentype truetype version 701 western top
Thus is circa 2012–2015 , likely from: When a font file lists prominently in its