Preserving Euro Hung Outside

[ndbuck09]

I tried to search for this topic as I would be surprised no one brought it up but I'm curious if anyone has an opinion on the best method to coat a euro for hanging outside on my shop? I've been thinking a clear water based urethane? Anyone coated a euro hung outside and had success with keeping it somewhat protected from the sun and weather?

Thanks

 

[butcherboy]

Use poly acrylic not urethane. Urethane will yellow