Early Architectural Floor Encaustic Tile Brown White textured Glazed Teri cotta

Description

Very Early Old Antique tile from ? I can't make out the letters AETCO with a circle around the letters looks to be made out of white clay / Terri cotta and then glazed with Brown and White with texturing it is old so there are imperfections ect small chips glazing crazing see photos 9 1/4" x 6 1/8" x 7/8" thick odd size floor or mantle