I'm not sure why the model eludes you. I track them on several sites weekly, and I routinely find at least a dozen on offer.
Your search criteria might be part of the problem. I use various search terms, including the company name (spelled out and abbreviated) and either the model name or the model number, or both. I run across many erroneously marked pieces because too many sellers today seem to do poor research or misinterpret their findings. Caveat emptor!
Please also be aware the term no-dash as it relates to a Model 36 ran from 1958 to 1988 so you could have (or not) diamond stocks and a pinned barrel. It might also have either a small or large logo on the left side of the frame. To further confuse the name and era the company introduced the Model 36-1 with a 3" Heavy Barrel in 1966, and it remained that until 1988.
Lastly, "Patience is a virtue." (probably a 14th Century proverb)