CGE 100W /DX Mercury Vapour

Here's a CGE 100W deluxe white mercury vapour lamp. The lamp inside has the CGE logo on it and has a slightly faded etch. I'm guessing this lamp is from the '80s but I don't know the exact date of it. There's a 9 under the main infomation on the etch and a stem press with the number 8 on it.

Edit: Thanks to Vince for the date info.