But, It looks to me I was not needed, you guys were right on the money all around.
What did Grandpa carry ?, consider this. Its a picture of Bucks first store display cases. And I bet a dollar to a donut that Grandpa bought his pocket knife out of one. Later, the blank space either held a 307 large stockman or a small two blade 309 model. For the folding knives bottom to top its, 110, 301,303 and 305.
These were on the counters up to the beginning of the 80's and likely some after. But new cases were then put out because not all models were being shown.
Toward the end of the displays lifespan in the fancy shores with lots of knife trade a second box could have been added and all the other folders of the 300 series were added (Camillus era contracts plus some other Buck folders). For you BCCI members these displays and old catalogs pictures are all available on the BCCI website.
The unwritten rule seemed to be, if you worked outside you carried a 301 if you worked in a building a 303, the 305 was for doctors and lawyers and judges. And ladies and preachers if they were wearing their suit.........300Bucks