Mexican Silver Brooch Round retailer with Man taking siesta and Donkey watching Vintage

Wonderful round brooch made from silver marked Mexico. The design is a man sitting with sombrero on taking a siesta with a donkey watching. The retailer detail is very good, the straight pin is in very good working condition, the man, donkey and 3 bars they are sitting/standing on are all raised to give the brooch dimension. The brooch measures approx. 1 1/2" round with Silver and Mexico stamped into the back. The brooch has not been cleaned in anyway and is as is. I'm not sure of the year but put it in the 1970-80's Ships FREE in USA only.