The square shank may have been Model T but the Model T didn't have them for the whole run due to the driver on the pliers handle making it redundant in the 20s I know that Ford did have several companies that supplied tools to them but I don't know about the screwdriver. The model T screwdriver was shorter than the Model A types.
Tool kits were supplied right on up into the mid to late 30s with few changes except the addition of part numbers on some of the tools. A lot of the ones out there may be of later manufacture than Model A. This link may be Model A or later.
https://www.worthpoint.com/worthoped...river-old-tool