2 Corning Ware Cornflower Blue Range P-81-B 1 PT. & P-82-B 1.5 PT. MISMATCH LID!

I did a basic clean, but you will need to do a further cleaning. The lid fits, but it says 91 and I do not know if its a Pyrex lid it does not say Pyrex. Please see photos. Let me know if you have any questions. Thank you.