Odd lathe bit blanks

Jim F

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got some of these today.
 

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They look like HSS ground form tools?
could well be a gunsmithing crown cutting set?
 
They look like HSS ground form tools?
could well be a gunsmithing crown cutting set?
Estate is from a gunsmith.
The lower one looks like a radius forming bit, not sure about the upper.
They appear to be blanks, though.
1 has Armstrong markings, 1 has a circled B, and another has a Jessup and bros.mark.
 
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