![](https://coimages.sciencemuseumgroup.org.uk/299/498/large_thumbnail_1983_7567__0001_.jpg)
Two rail profiles
Two rail profiles, working, sides, rail flange, for BS O 50lb flat-bottomed rail, Crown Agents No.[10/3], in replacement envelope
Two rail profiles, working, sides, rail flange, for BS O 50lb flat-bottomed rail, Crown Agents No.[10/3], in replacement envelope