Overall, these were simple but attractive models, produced from the Best Box days, then as Esfis up to about 1980 or beyond-as many Efsi vehicles were then lent to Spain's Auto Pilen (Bras 2012a; Bras 2012b; Breithaupt 2001).
Overall, these were simple but attractive models, produced from the Best Box days, then later cast as Esfis up to about 1980 or beyond. Even later, many Efsi vehicles were closely duplicated by Spain's Auto Pilen (Bras 2012a; Bras 2012b; Breithaupt 2001).