Woodruff cutter number help

[Froneck]

I'm not cutting an opening for a woodruff key. I want to cut .375 radius X .187 wide X .161 deep. Looking on ebay most don't list actual size. I know the older numbering system in that a 404 would be 1/8" wide cutter 1/2" in diameter. But I see numbers like 365 that owner states has 1/2" shank and cutter looks to be about 1/8" wide and 5/8" diameter. Some have only KEO part 62010 202 but photo does not look like a 202 cutter!
I need one that is 1/16 wide (actual size needed is 5/64") X 1/2 cutter diameter, I can us a 204 but a 5/64" cutter would be better.. Another as mentioned above 3/16" wide X 3/4" cutter diameter ideal shank size would be 3/8" but can grind 1/2" away from cutter.

 

[Brandenberger]

I have a B&S no9 which seems to match your dimensions marked as 3/4” - 3/16”

 

[Froneck]

I assume the shank is 1/2" I can grind it.
How much do you want for it?

 

[Brandenberger]

Yes 1/2” shank. PM me, I have a few, some probably unused and some lightly used.