Authentic Omega 172 bracelet from an Omega Flightmaster - note that it has a vintage Heuer clasp instead of an Omega one. Fits 22mm lug width watches. Some stretch in the bracelet as expected for a bracelet of this vintage but in overall good condition. 

145.013, 145.026, 145.036, 166.091, 166.093, 166.250, 166.0250, 176.002, 176.004, 176.009, 176.010, 176.012, 176.016, 188.002, 145.0013, 145.0026, 145.0036, 166.0091, 166.0093, 176.0002, 176.0004, 176.0009, 176.0010, 176.0012, 176.0016, 188.0002.