It falls under the category of badges and emblems, specifically hardware railwayana.
Flying Scotsman Enamel Pin Badge Curved Railway Train Nameplate Collectable Bar
VINTAGE SE & CR C 0-6-0 NO.592 RAILWAY ENAMEL LOCO TRAIN ENAMEL PIN BADGE
Deltic nameplate badge, lapel Enamel pin Badge
Class 57, Restormel Castle, GWR, Night Riviera. badge, lapel Enamel pin Badge
Vintage Seaton Tramway No 2 Enamel Pin Badge Railwayana Tram Design Badge Emblem
Class 37 ' Oor Wullie, enamel pin badge. 6cm
