vintage Arrowhead railroad china custard / soup cups, tan adobeware ironstone

Set of eight vintage Arrowhead railroad china ramekins - custard dishes or handleless soups? They're about 4" in diameter.

These are vintage Mayer adobe ware china with arrowhead border pattern in dark red on the tan background. There's a little scratching and finish wear to all eight cups, though no chips or cracks to any of them.