In addition to the items on sale from the store rooms of the museum, there will be stalls set up by heritage and not-for-profit groups who will sell their railway themed second hand and home made memorabilia, art, craft and models.
Other attractions that day include mixed-gauge train rides and steam train rides on Bub - steam locomotive #4.
It's all set to happen on Sunday the 16th of June from 10am to 4pm at the National Railway Museum in Lipson Street, Port Adelaide
A special admission price for the day will be only $2 per person (normally $12 per adult, so a huge saving).
If you're into trains and railways, or if you're looking for something different to do with the family on a Sunday that's not going to cost a fortune, then this is definitely an event for your calendar.