Find 'count of older files' in a folder?

Guys is it possible to get the number of files in a folder? Specifically, I want to retain the latest xx number of files that I keep as backups in a folder and delete the older ones?
I know it must be possible (I think) but I can't find such an option...
Thanks for any help in advance.

You can use a condition like "Date is not among the X most recent" to match files outside of the X most recent files, based on whatever date attribute you want to use.

Ah ha, thanks I'll give that a try!

Is it best to use 'Date Created' or 'Date Last Modified'?

That really depends on your needs. Look at the dates in Finder and see which one makes more sense.

Okay will do