I came across several Tobin ads in the 1913-1915 Rod And Gun In Canada which I've added here
https://docs.google.com/document/d/1oDJQ1usil2iRMrlJgyg5HXVpR8lIo6QX5cCDwgojC8g/edit#

It is likely things were winding down at Tobin Arms in 1915, though advertising continued into 1916. It is not clear when Gladstone Blake Crandall bought the remains of the company, but Tobin Arms Manufacturing Company, Ltd. is not listed in the Woodstock City Directories after 1916.
Canada's entrance into the WWI with Great Britain in August 1914 probably contributed to the demise of Tobin Arms.

April 1915 with "special war-time bargains"

[Linked Image from photos.smugmug.com]

I assume the $60 gun was the Trap Grade No. 70

May 1915

[Linked Image from photos.smugmug.com]