The Doctor's Knife is a truly unique pattern. Featuring a "pill crusher" bolster and usually a spear and spatula blade. Though some are double bladed with a spear and pen blades; and a single spear blade was made as well. The Doctor's Knife was most recently featured in 2018 as Case's Vault release pattern.
Pictured: Buffalo Doctor's Knife
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The Doctor's Knife is assembled on a Case pattern #85. Only one other knife was assembled on this pattern, the Sleeve-Board Style Whittler, which was produced before 1915.
The Doctor's Knife is traditionally 3 5/8 inches closed, though a Baby Doc was also produced that measured 2 3/4 inches closed.
Introduced prior to the 1940s, Case stopped producing the pattern around the mid 1970s. However, there were a few special production runs in the 1980s and 90s. Eventually, the pattern made a full return to production in 2001 before being retired again by 2018.
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As you may have guessed, the knives were traditionally used by doctors making house calls. It was viewed as a sort of doctor's multitool. The long spear blade could act as a backup or emergency scalpel or to cut pills. The spatula blade could aid in mixing salves/medicines or as a tongue depressor. And the flatten bolster (aka pill crusher bolster) was used to grind pills and other ingredients into powders.
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