Unbranded slicks

[martinnitram]

Bought some used slicks, pair fronts and pair of rears, both dunlop, the rears have dunlop logo on the sidewall the fronts dont.
They look the same have all the type numbers A46D and compound part number 720 which is dunlops code for a medium, im not doubting there origin, they just have no logo.

It doesn't look like the logo has rubbed off as they have had little use.
Anyone come across this before?

[megenzo]

i had it with bike racing tyres, they were world Superbike tyres, either development ones or special order supplied to a team before they went to a one tyre make class of course.

[martinnitram]

I also wondered if dunlop make tyres for other manufacturers on the quiet, but then they would be branded up accordingly.