Seeing Cooper Black at this size always makes me smile. This numeral 4 was amongst an assortment of mismatched wood type purchased from an ebay seller a number of years ago.
The original metal face was released in 1920 by Barnhart Brothers & Spindler. It’s overwhelming popularity meant it would inevitably be copied by every foundry and wood type manufacturer. I have a PDF of a Hamilton Manufacturing Co. catalog from 1938 (I’m pretty sure it appeared as wood type years earlier) showing specimens of Cooper Black, Cooper Black Italic, Cooper Black Condensed, Cooper Black Extra Condensed, Cooper Black Double Extra Condensed, and Cooper Black Highlight.