Gene,
Upon further review of my Gradfather's 22, I did some things you recommended. I took the barrel out of the stock and looked for a model number. No model number found, at first glance since I was looking for the words "model" but only saw a number 5 stamped in it and thought it was a part number. I looked again at the link you posted and there actually is a 5 on the chart that doesn't have any other digits with it. 1936-45, 22,000 made. I think that must be it.
Not worried about the value, since to me it's a family heirloom, not for sale!
I thank you very much Gene.
Ron