Spectrum of the western blob expressed in radial velocity with the wavelength centered on [O III] 4959 Å (blue data), 5007 Å (orange), and Hβ (green). We note the absence of emission from Hβ at the blueshift velocity value where emission from [O III] is detected. The Hβ emission was, however, detected at zero radial velocity, and its origin likely comes from the gas surrounding the progenitor WD (work in preparation).