Nice looking Boker Dogleg, V.P., but it dates a little later than you might think.
When Ricky and I wrote the Boker book, we started with a mountain of catalogs and paperwork that we had each accumulated over many years.
While we tried to include as much information as possible in the book, size and cost restraints usually limit how much can actually be published.
The reference guides in the back of the book give pretty good clues as to when a Boker knife was made, but they all have to be used together.
I have the advantage in having my Boker reference material right in front of me, but even then it can be a challenge sometimes in figuring out certain Boker models.
My estimate would be that your knife dates to the mid 1970s. While that model does date back to 1914, that type of shield wasn't used until 1955.
And while that shield was offered in 1955 on many Boker models, I don't see it used on the model 9903 Dogleg knife like yours until after 1973.
By 1976 the shield was changed slightly with the addition of a small "R" (registered) mark, but the older shields could have still been in use until they were used up.
Here is an illustration for the Dogleg model 9903 as seen in catalogs from 1955 through 1973 with no shields on the handle, along with one from 1976 with a shield.
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