Unusual rear suspension hidden beneath rear guard. Some examples have a vented RHA engine cover .
Russian site says: "Model 125 A "Palillos" was the perfect motorcycle for that time - a simple, capable of carrying two people with minimal fuel consumption and minimal operating costs. Ossa 125 A was the second model of the company."
Spanish page: https://www.wikiwand.com/ca/OSSA_125
Exhibited at the Museu Moto Bassella