A curious study on CD 154 from Mexico. The CIA Telefonica found its way back home with me from Ohio and is so much taller than the AA. Also note the rounded versus flat domes. And, the new test part is there is a 3/4" circular blot out on the rear skit of the CIA. Surely not from RYT or any other marking from Mexico or the US I am aware of.
Does anyone else have any Mexican CD 154s to send photos of that could help make sense of these differences or a confirmation of the blot out? Please email me. Zac.firstname.lastname@example.org