Is an entire missing blade classed as a "chip"?

I'm an amateur in straights but I would say, no. That blade is cracked.

The country boy in me is proud someone may of had willpower enough to get every ounce of use out of that.
But the realist tells me someone tried to sharpen their razor with an angle grinder. Lol

Thats what you call some "hone ware"
Right there!

Oh, that'll buff right out.

It might spread butter or open letters.

Are the scales worth saving?

I've seen the same with shaving brushes .... barely enough left to recognize what it is.

I'd pay more for your photo of a bin Billy... decent shot that

You know, I see so many of these narrow razors with huge heel hooks, I’ve begun to believ that they were made intentionally to be hair ‘sculptors’ or edge trimmers, chips and cracks notwithstanding. There are just too many of them to be worn random razors. But hey, I’ve been wrong before.

Make a mustache razor out of it. For tight spaces.

My thoughts are similar but different

I have always thought they left the life of cutting hair and were used for another purpose

Two that I know of that SR's were sought out for

Patch Knife but usually the Older Heavy bladed Sheffield types
Many were used in Baker's hands as a Scoring Knife

I would imagine that other crafters have put the SR to good use perhaps for Leather Work ???

anyway I spent my 2 pennies

Could be, I’d forgot about baker’s scoring knives.