| Brand | Nikon |
| Model | Eclipse 50I |
| MPN | 78643 |
Pictured is a Nikon fluorescent filter cube BV-1A designed to fit the following microscopes: Nikon labophot, labophot-2, optiphot, opotiphot-2, microphot, and TMD inverted. It is in new condition having been used as a dealer demonstrator.