Yes it does have a #7 at the top end near the font edge. I emerged it in a 50.. 50 solution of vinegar and water. Did great for all of the light stuff, but there's a huge mass build up around the entire outside. 80 grit would take days. Pulled it out, rinsed it out really well with cool water and it's in the oven now drying. Going to leave it in for a half hour then put a thin layer of canola over it to prevent rust. Going to set up a lye bath for it. Have the oven on 335, also have a lodge that I resurfaced and taking another skim coat of canola in the bottom. The rest has just a slight tack. Cast iron is becoming an odd, but very interesting Hobby LOL. Was a machinist for 25 years. Like working with my hands and Metal. Much better working for myself haha