P/N CQF975/58xx is same as CQF975/508-19xxx, CQF975/58xx is earlier code. See datasheet in 1st pdf link below. With integrated wavelength monitor. 900um-buffered PM fiber with FC/PC connector. 

Wavelengths and P/N:
2 sample tested 1529.710nm and 1529.731nm at 20mW 25C, CQF975/5899, without manufacture test data
1530.33nm, CQF975/5801, without manufacture test data
1530.33nm, CQF975/5801, with manufacture test data
1531.12nm, CQF975/5802, without manufacture test data
1531.12nm, CQF975/5802, with manufacture test data
1531.90nm, CQF975/5803, without manufacture test data 1532.68nm, CQF975/5804, without manufacture test data
1532.68nm, CQF975/5804, with manufacture test data
1533.47nm, CQF975/5805, without manufacture test data
1533.47nm, CQF975/5805, with manufacture test data 1534.25nm, CQF975/5806, without manufacture test data
1534.25nm, CQF975/5806, with manufacture test data 1535.04nm, CQF975/5807, without manufacture test data
1535.04nm, CQF975/5807, with manufacture test data 1535.82nm, CQF975/5808, without manufacture test data
1537.4nm, CQF975/5810, without manufacture test data 1538.98nm, CQF975/5812, without manufacture test data
1538.98nm, CQF975/5812, with manufacture test data 1546.12nm, CQF975/5821, without manufacture test data
1546.12nm, CQF975/5821, with manufacture test data 1547.72nm, CQF975/5823, without manufacture test data
1548.12nm, CQF975/5823.5, with manufacture test data 1549.32nm, CQF975/5825, without manufacture test data
1550.12nm, CQF975/5826, with manufacture test data 1550.12nm, CQF975/5826, without manufacture test data
1550.92nm, CQF975/5827, without manufacture test data 1552.52nm, CQF975/5829, without manufacture test data1555.75nm, CQF975/5833, without manufacture test data
1555.75nm, CQF975/5833, with manufacture test data
1556.55nm, CQF975/5834, without manufacture test data
1556.55nm, CQF975/5834, with manufacture test data
1557.36nm, CQF975/5835, without manufacture test data 1557.36nm, CQF975/5835, with manufacture test data
1558.17nm, CQF975/5836, without manufacture test data
1559.79nm, CQF975/5838, without manufacture test data
1560.61nm(one sample tested 1560.224nm), CQF975/5839, without manufacture test data