Vintage Stanley Bailey No. 4 hand plane, a general-purpose woodworking tool. 

• It is a smoothing plane, typically used for final finishing work. 

• The No. 4 is a common size, measuring approximately 9 inches long. 

• These planes have a cast-iron base and a double-iron cutter. 

• The design has remained largely consistent over many decades, with minor variations distinguishing different manufacturing "types".