Kitchen Countertop refinish

When the house was purchased (1910 Craftsman), the kitchen counter top had brown & blue ceramic tiles, 6” sq, with white grout. It was hideous tile, and the grout job was worse. Fortunately, the installer slapped a 1/2” ply (grade b or worse) over the doug fir slab & tiled away!
I was able to remove the top layers without doing too much damage to the “original” counter.
At least i think its douglas fir, can’t imagine it being anything else. I counted 180 growth rings on it. The piece is about 22” w x 77”
When I refinished it, I added a narrow strip along the back to make it a nearly standard counter depth. I also added filler to a broken chunk I couldn’t rescue at the end of the counter. I wish I had played with getting the color right (live & learn).
I used a water based poly for the finish, 4 coats i think? It’s been there a few years now & is showing its age. Hoping to do more work in the kitchen, where this piece will be relocated a lower-traffic area. and perhaps a different finish.

-- Mark, Portland, OR - what's for dinner?