I have always shipped games with the backglass in place. With proper packing, you should be fine. If the glass is unique or irreplaceable, I would remove it and ship it separately in a crate or mirror pack.

IMO the games are meant to be moved complete, imagine these being moved and backglasses being broken in the process, operators would not tolerate that. I have heard of exactly zero backglass being broken in shipping the whole machine. I have heard of at least 3 being broken when shipped alone, even in a crate. A complete machine cant be dropped as easily as a backglass alone

Just don't forget to put a screw in the sliding insert latch to stop the insert from falling into the translite or backglass and scratching it.

NIB machines are shipped from the factory with the back glass in place. This is the safest place for it as long as the machine is well packaged for shipment.

Yea, I thought never ship a game without the backglass in the head and then I saw a Classic Stern Iron Maiden with the glasses in the head and both glasses broken and shattered. Made me think twice about this topic....ALOT....

Actually I think if the backglass is super rare; as with above; I would probably ship them in my wooden crate I built with 2x2's and 3/4 inch plywood that you could drive over with a truck.