I have x2 IF550 green interference filters, 45mm diameter.
This filter can be mounted into any insert that is 45mm, this includes Olympus and Nikon microscopes, and likely the other two as well.  Please check your manual.

This is a high quality interference filter for phase contrast and contrast enhancement. 
New, original packaging.  Show in the last photo is an opened one from a previous listing, for illustration only. 

The item will be packed professionally.  I will NOT send it in a soft padded bag as an envelope. 

Shipping:
Shipping costs adjusted for travel, materials and handling.  High value items insured. 
I do ship globally.  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 or DHL e-parcel (usually 3 weeks)
Express offered, I can do UPS or FedEx, I can use your postage labels, enquire.

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.