Negative Carrier Adapter (early) for Omega ProLab II Enlargers - Used

Omega ProLab II enlargers are based on the D5500 chassis and were supplied with a High-Lift Mounting Kit which included an adapter plate allowing the use of D-5 type negative carriers on the D5500 negative stage.  Two different types of adapters were supplied.  This is the early type adapter plate. 

The advantage to this type of plate is that it has a circular locating frame on the bottom which allows the adapter, and thus the negative carriers, to rotate.  The disadvantage is that since it is an entirely separate piece, the adapter is often misplaced or lost.

These adapters are used, and may have cosmetic marks from previous use, but are certified to be in perfect working condition.