Welcome to the Bunnings Workshop community @jhooper. It's fantastic to have you join us and many thanks for your question.
I've had a look through our available products both in-store and through special orders and unfortunately, nothing matches your description.
Let me mention our resident caravan renovating expert @RobPegley to see if he would know of any sources for vintage linoleum. If you haven't already I'm sure you'll enjoy reading through Rob's caravan renovation articles starting with How to renovate a caravan - Part 1.
We look forward to hearing more about your caravan renovation project and would encourage you to let us know if you ever need assistance or would like to share something with us. I trust you'll find loads of inspiration from within the community as our creative members are contributing their projects here every day.