Issue with my 3509 Bund

I have a IWC mechanical Bund that is currently being serviced by my watchmaker - a 3509. Unfortunately the watch has a 32.00mm x 2.60mm glass that is glued in. Can anyone please advise me the original glass and gasket dimensions, plus part numbers and possible any ideas of availability? Also would the original Bund glass have an anti-glare coating? Thank you so much for anyone who may be able to assist.