Cast Iron W&ARR Toy Train

I have a cast iron train along with a few cars that have the marking W&ARR on them. The trains are a little rusty, and have been weathered.
Can anybody recommend how to restore these? Should I remove the rust, and treat them with light oil? etc....
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Polytechforum.com is a website by engineers for engineers. It is not affiliated with any of manufacturers or vendors discussed here. All logos and trade names are the property of their respective owners.