I have an opportunity to purchase an old Irwin glow engine. Don't know the details yet but are they a collectors item?

Yes and no

Most certainly the one you are looking at is no longer made

But as far as a collectors item ???? I doubt it has as much value as when purchased new?

They were good engines

Here is a picture of it.

You will like it

is it just me, or does that engine look amazingly like an old K&B .40?

It's an old timer from the late 60's

Is this an Irvine or Irwin? The Irvine engines are very good.