How much would you pay for this box of end mills

Here are better pictures of the weird stepped mills:


View attachment 427649
View attachment 427651
The largest diameter is .625"
The medium diameter is .590"
The small diameter is .485"
The stepped sides are straight, no taper.
I'll bet the purpose of those is just stepping a hole up to it's largest size. Probably modified from something else to make a job go quicker by not having to change bits.

John
 
The three step ones are for putting a port in.
To maintain the correct distance between the lands it is ground into the tool
 
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