Funny thing about these old gauge faces. You touch them with almost anything and it leaves a mark. The anti glare finish turns almost into a chalk and anything that touches it will leave a burnished track. I bought a nasty mud crusted 64 Bezel at the fling and parted out the guages and the almost perfect lenses! A little Meguires plastic polish and they look 1964 new. Speedo worked after I lubed it, as well as the 3 other gauges.