The article is reasonably accurate but the "R" is a little hard to research because of the lack of factory documentation. I received some help through the NOC and a few west coast Norton enthusiasts.
She was dispatched to British Motorcycles, Vancouver, BC on the 15 of January 1969. s/n 1301xx.
I've owned her for about 18 years and she's a keeper.
List price in '69 was $1,495.00 cdn.
You could build one from any '69 20M3 but a serial number check through the NOC would prove it wasn't an original.
I know of only two other genuine R Types. They're quite rare and were an export model only, the majority of them being shipped to the US. They're a blast to ride although the stock seat is a tad uncomfortable. It's got more grunt than my '71 and is a hands off rider (doesn't pull left).
I've got pleanty of pics and could post some or email them to you if you like. There's a larger one of my avatar on the "metalflake" thread.