Examples of the type
ND (1960-1961) – (en) Signatures: Figueroa & MackennaSignatures: EFG, LMS₁(en) Signatures: Figueroa & Mackenna
Private collection
ND (1962) – (en) Signatures: Mackenna & IbañezSignatures: LMS₂, FIB(en) Signatures: Mackenna & Ibañez
ND (1962) – (en) Signatures: Mackenna & IbañezSignatures: LMS₂, FIB(en) Signatures: Mackenna & Ibañez
ND (1964) – (en) Signatures: Molina & IbañezSignatures: SMS, FIB(en) Signatures: Molina & Ibañez