Hello! I am taking on a project re-create these plaques for a local organization. I am just finishing the wood, nothing to do with the lasered acrylic. The circular disc is located inside, the slab is mounted outside. I am making more of each and need to try and replicate the finish as much as possible. What do you think they are finished with? What would you finish them with? I have a sprayer so would love to do a water-based finish (there are roughly 30 of them).

I reached out to Minwax and they said their water-based spar urethane functioned the same as their oil base without yellowing ... I believe them about the yellowing being reduced but lasting as long as oil I'm not sure I'm sold on. Any opinions/experience of water based spar urethanes or suggestions of what you would use would be greatly appreciated! Thank you!image_67196673.jpgimage_67159297.jpg