Italian road sign of 1989: urban pedestrian zone. Figure 1 of  attached I of the decree. Note that the original image is of poor quality also because the decree says explicitly that for the details of the sign should be consulted the other previous laws and decrees about road signage. Note that the sentence in the sign it is written using the font Alfabeto Normale but it should not be excluded that the original sign used another font (such Alfabeto Stretto).
Allegato I del Decreto del ministero dei lavori pubblici del 27 maggio 1989 (pubblicato sulla Gazzetta Ufficiale della Repubblica Italiana - Serie Generale - Numero 129 del 5 giugno 1989)
This vector image includes elements that have been taken or adapted from this file: