Are these your part numbers?
http://www.classicparts.com/1949-53...2-Volt/productinfo/24-700D/#.VvvVqRIrKdE
http://www.classicparts.com/1931-66...30-Ohm/productinfo/23-522A/#.VvvWBxIrKdE

Maybe they mistakenly pulled/sent this 90 ohm unit that looks almost the same?
http://www.classicparts.com/1931-72...90-Ohm/productinfo/23-522B/#.VvvWIBIrKdE

Call them and ask if the two different-ohm senders have any different markings?