Technical How to decifer Firestone and Wards Riverside date codes?

I wonder if anyone can help me read the date code on a few old Firestone racing tires i have.

Firestone Bonneville 16": 114 R7876 and 93 R7876
Firestone Bonneville 18": 80 R7877 and 41 S0174

Firestone Indy 18" : 303- R8627 and 1014-S0100

Ribbed Firestone fronts 16" : 400030054 and F046009T and C371171T.

I also have a set of Wards Riverside 19" narrow front tires with narrow contact area, which looks like what would be found on a ca 1930 indy car.

They have codes 262ov353 and 285ma527.

It would be very nice to get help with this.