What makes you think the Tom Gravely's token is a slot token?
I have several tokens from Alaska all about the same size. Most are called pre-statehood trade tokens.
Bingo Darts-Anchorage
Fire Island NCO Open Mess-Fire Island, Alaska
Imperial Pool Parlor-Juneau, Alaska
Kivalina Reindeer Trading Co-Kivalina, Alaska
Olsen Brothers-Bethel, Alaska
Actually there are 100's of tokens from Alaska.
Do you have the ID on the S&W hub?
S&W-Symposium Bar-Anchorage, Alaska-14-Mar-49- 500 red made. I have yellow and blue also.