Here's a rarely offered CD 392 multipart glass insulator from Brazil. Embossed VFO 89 (front top shell) VFO 81 (with the 1 over 0) bottom lower shell 15 (reverse top shell) 11 (reverse bottom shell). Made by VIFOSA.

Condition is NM with flakes on 3 dome turrets otherwise only light scuffing and 4 pinhead tics and some internal cement discoloration. First email gets this tough piece. Thanks