When you made the holes, did you punch a sharp object through it or drill? If it's been punched the tabs could be peened back into place, then you could take the sink some place and have them braze the holes full...it wouldn't take but a few minutes and would add to the "used and abused" charm. Keep in mind the brazed patches would be brass colored rather than copper. If you wanted a silver look, you have someone in the HVAC business silver solder the holes. Either way would be equally durable, and would last the life of the sink.
If the holes were drilled, they could still be filled...it would just take a wee bit longer filling...but by all means doable...
Show us some pictures if you have any...
If the holes were drilled, they could still be filled...it would just take a wee bit longer filling...but by all means doable...
Show us some pictures if you have any...