This was removed from a working Zeiss microdissection microscope.
It is functional and looks clean.  
The filter is 50mm in diameter. 
This should be an ND filter, reflective type.  Correct me if I am wrong. 
It is installed with a motor and ready to be used for your setup. 


No eBay AI description was used. 
 

Shipping:
Read this carefully.
I do ship globally.  I will combine postage.
Sometimes, eBay does not combine postage costs.  Pay anyway and I will refund the difference, or wait for an invoice.  I can also do custom listings for you that include all the items. 
AusPost Standard (and express) offered for these regions/countries:
- New Zealand
- China, South Korea, Japan, Macau, Hong Kong, Singapore, Taiwan
- Mexico, Canada
- Continental Europe, including Russia
AusPost DDP (delivered, duties paid):
- United States of America under Donald Trump
I prepay for the tariff rate imposed.  The tariff amount is built into postage.  You are still paying for the tariff.  
  
For countries/regions not listed, I will only offer Auspost Express.  If you are from these areas and you are okay with up to 8 weeks postage times with standard, message me.  There is nothing I can do to improve local customs. 

AusPost Parcel Post to anywhere in Australia. 
Usually ships in a day, however, I do get busy at times and go on business trips, so please allow up to 7 days.

Returns and refunds:
Accepted if the item is not as described.  Full refund in case it is lost or damaged.  High value items will be insured. 

Customs: 
It is the buyer's duty to contact customs in case of items being held for clearance.  I will provide invoice upon request.  
An item held for too long will be returned.  I will not refund postage in this case. 
It is the buyer's duty to contact me regarding any special customs provisions the destination may have. 

Photos:
All photos were taken with a mirrorless camera and adjusted white balance using a grey card.  Minimal processing.