Model Catalog: Q31D (Lot serial: ALL PRODUCTION LOT); Model Catalog: Q31B (Lot serial: ALL PRODUCTION LOT); Model Catalog: Q31BB (Lot serial: ALL PRODUCTION LOT); Model Catalog: Q31C (Lot serial: ALL PRODUCTION LOT); Model Catalog: Q31DB (Lot serial: ALL PRODUCTION LOT); Model Catalog: Q31CB (Lot serial: ALL PRODUCTION LOT)