4X5 Grid Focusing Screen, Sinar? Bright?

Description

4X5 Grid Focusing Screen, Sinar? Bright?
This is marked Swiss Made in the top left corner making me think it is Sinar.   It is a fairly bright screen and I can read through it.  The corners are cut as you can see.  This is in excellent used condition.
PLEASE CAREFULLY REALLY READ ALL OF THE FINE PRINT BELOW BEFORE PLACING YOUR BID
I primarily sell used photo equipment. As such it is usually not 100% perfect. I try to advertise items as honestly as I can, but if you are looking for something that is 100 % perfect it might be better if you buy the item new. Also, I do NOT use stock photos.
The following is for those that do not use eBay Global shipping:
Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility.
Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying.
These charges are normally collected by the delivering freight (shipping) company or when you pick the item up – do not confuse them for additional shipping charges.
We do not mark merchandise values below value or mark items as "gifts" - US and International government regulations prohibit such behavior.
I cannot be responsible for delays caused by the post office or customs inspectors.
PAYMENT & SHIPPING  TERMS:
Buyer agrees to pay within 24 hours (if not immediately). Items will be shipped after I receive payment. Most items will be shipped within one or two business days and I work hard at this.  I do NOT ship on weekends. If there is going to be a delay, I will let you know.
_gsrx_vers_859 (GS 7.0.21 (859))