There are only 2 stock variations of the Zephyr I.
1) Mannlicher stock, checkered, may have single or set triggers.
2) Zephyr made what was know as a " standard" model. It had single trigger only. Carbine or short stock, of lesser grade wood. No butt plate , checkered butt. Same action, but barrel and sights are different.
The standard was not checkered and was less desireable.
I have several mannlicher stocked Zephyrs and 1 "Standard". The standard has been customized.
Too bad the Zephyrs don't shoot as good as they look.
In the following pic....the bottom is a" standard" Zephyr . The second from top is a mannlicher stocked .
I may have interest in your Zephyr, send some pics to: cisco1
att.net If you want,