A new restaurant with some very old spelling

Sign at new Masa restaurant, Broadway and Hemlock, Vancouver, BC

Sign at new Masa restaurant, Broadway and Hemlock, Vancouver, BC (Detail)

Spelling in English is a "movable feast". Letters come and go from the accepted spellings in English. The currently accepted spelling is "coming", although "comming" was the accepted spelling in the past.

But regardless of whether it was the accepted spelling in the past, it is not what people are expecting today.

Is this a case of anachronistic spelling, or just a sign made by someone who can't spell? In this case I suspect the latter.