Interestingly there is also a paper inlay on the lid underside with a temperature guide for both the modern flat bottom rails, and the older bullhead rails which were discontinued in the mid 1950's.
RARE 1950s ERIC RAVILIOUS Garden dish for Wedgwood 1930s rope swing Summer
Rare 1950's Negretti & Zambra rail expansion gauge for 60 foot rails
Negretti & Zambra Railways Expansion Thermometer 45 60 Foot Rails Copper
Rare Langley Stoneware Pottery (Denby) Pullman Sugar Bowl. British Rail 1950s
15x Vintage Paris Metro Tickets - 1950s/60s RATP – Incl. Rare 1st Class ticket
FRANCE RAILWAY TRAIN PARIS TRAPPES MILITARY TARIFF TICKET RARE 1940S 1950S VF!!