It is as it was many years ago needs a tidy - one for the expert. Probably a heavy tail or train protection lamp - two listed much alike.
BRITISH RAILWAY HAND LAMP USED STEEL BEZEL FOR 5.00IN DIA BULLSEYE AS PHOTOS
BRITISH RAILWAY HAND LAMP GLASS 5.00 IN DIA 6MM THICK BEVELLED EDGE & BRAS BEZEL
BRITISH RAILWAY HAND LAMP GLASS 4.75 IN DIA 6MM THICK BEVELLED EDGE & BEZEL (C)
BRITISH RAILWAY HAND LAMP GLASS 4.75 IN DIA 6MM THICK BEVELLED EDGE & BEZEL (B)
BRITISH RAILWAY HAND LAMP GLASS 4.75 IN DIA 6MM THICK BEVELLED EDGE & BRAS BEZEL
BRITISH RAILWAY SQ LAMP TOP & FUNNEL WITH LID 110MM DIA STAMP (W) & SPRING CLIP
