Old Swindon Ticket Query

[Bedford Red]

I've got some old Swindon tickets, and one doesn't have an opposition on.

I've attached a scan (hopefully). I think it's from the 1979-80 season as it matches another one from that season.

As you can see it's a Football League Cup replay ticket so must be for the Stoke home replay or the Arsenal home replay.

Anyone with any old tickets who may know, or can just remember?