"Hi Tom ;)
Not sure on the exact date, but definitely 70's.
"Fifth design. The Fifth generation of the Astro, is the most commonly seen 1970s model, and uses standard Astro bottles. It was the first design to be mass manufactured in…"
How is everything with you, I picked interest on you after going through your short profile and deemed it necessary to write you immediately. I have something very vital to disclose to you, but I found it difficult to express myself here, since it's a public site.Could you please get back to me on:( firstname.lastname@example.org) for the full details.