1912:
The Excelsior Tyre & Rubber Company
Excelsior Motor Cycle Tyres
Rec. Num. 1 of 2
Source: The Motor Cycle November 28th 1912
1914:
The Excelsior Tyre & Rubber Company
Excelsior Motor Cycle Tyres & Retreads 1914
Rec. Num. 2 of 2
Source: The Motor Cycle July 30th 1914