Hi Brewster
The Sinclair book is out of print and very expensive at present time. I may be able to help.Model 1312 T.In 1935 they began using a letter to designate the action of the rod,T=Trout action.Shakespear did not manufacture any of their own rods until 1947,the first fiberglass [Wonderods].In 1947 the Wonderods listed in their catalog for 60.00 and the bamboo for 16to26 dollars.Most of their rods were made by Heddon,Montague and after 1935 South Bend.If I can help more let me know.