SPEEDAIRE and Dayton Filter-Regulator: Std Duty Series, 1/2 in NPT, 212 cfm, 40 micron, 5 psi to 150 psi with gauge and attachments you see with mounting bracket. Used but fully operational.
Model 4ZK97
Two available $95 each.
Compressed air filter/regulators combine the function of a filter and a regulator in a single device. They are a component of a Speedaire FRL system.