[AMPS] B&W 85? - help to ID needed

[Bill Coleman N2BC]

I have a B&W 85(something) 'in stock'.  How can one (me) tell if it's an
850, 851 or 852 ??  There's a smallish decal with B&W spelled out but I
can't make out any model info.

Mechanicals:
8" deep, 6" high, 4.5" wide, 60 degree switch detent
10M coil is 4 turns of .5" wide strap abt 4" long x 1.75" diameter
20/15M coil is a bit under 4 turns of 1/4" tubing, 3.5" diameter
80 & 40M coil looks like #12 3.5" diameter, 12.5 turns

Next question... what are the L values for each band?   I don't have any
fancy measuring goodies.

Last question... What's the design load impedance?

Well, one more question... anybody have a spec sheet?

Thanks in advance, Bill N2BC


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