Helping someone with a chronic tagging problem on a no parking sign find the kind that one can wipe the graffiti off with solvent without damaging the sign or message. As an example, across from the school next to the Plaza and across from the church in Ajijic, the garage doors there have that type of No E sign and size they are looking for.
t appears it may have some sort of coating on it that won't allow graffiti to stick. The no right turn sign at the end of Guadalupe Victoria at the NE entrance to the Plaza is also graffiti proof and easy to clean.
The regular painted ones don't work because they are damaged by graffiti removal. That is all the sign shop at the east end of San Antonio on the Carretera has.
Thanks.