Spectrum of SN 2020bqj at +23 days, together with spectra of the prototypical SN Ibn 2006jc and the peculiar SNe Ibn SN 2011hw and PS1-12sk, at similar epochs since estimated explosion. SN 2020bqj, SN 2011hw and PS1-12sk show similar features across the spectrum, including prominent C II lines, which are not observed in SN 2006jc. The C II features in the spectrum of PS1-12sk have disappeared at +26 days (see Sanders et al. 2013), whereas for SN 2020bqj and SN 2011hw they remained visible for ∼50 days.