Hello all,
A friend of mine just walked in with this 30” double sided Valvolne sign (I attached some pictures, I’m hoping they show up). The one side isn’t too bad, but the other side is covered with a tar like substance that needs to come off. I suspect it was used to cover some kind of hole and driven over (looks like tire tread or chicken wire pattern) and some kind of 'cement' was used to hold it in place for whatever. It’s marked A Fogarty on the bottom, it is old for sure, it’s worth saving. I just don’t know what is the best procedure to get this tar off and any help is appreciated in helping to save this sign because it’s deserving. Thanks in advance, please look at the attached pictures, Keith from PA | 
