This mug is marked with F (in shield) 35 USA. There is no damage, but has some of the common manufacturing anomalies. I only have one of the mugs marked as described above, but have others that look the same but are additionally marked Heat Proof or Heat Resistant. Photo of the mug backstamp is available. I need your zip code to calculate the postage. NOTE: The other Federal mugs are also listed on this site.
