Ttownthomas,
The tank looks good, It appears that the tank has been coated and that coating might have covered any type of sticker describing the tank.
here's a pic of a tank I had fabricated for another boat
https://photos.app.goo.gl/RcF3XCUXuiZKU6dx8
the only nit picky things and they are nit picky ...
1. there is only one hose clamp on the vent line.
2. the ground line from fuel fill to the fuel inlet has a cheap auto style but connector joining the wire, you don't want to build up a static charge potential between the fuel fill and the tank itself, make sure this wire stays in good condition. The way I've done it in the past (might not be the best way) was to make one piece of wire, strip off 3" on either end of the wire and fold the stripped portion of the wire over the edge of the hose and hook up the fill and tank fill so the wire is on the inside making a good electrical connection.
3. different materials on fill side, that itself isn't a problem, all seem to be joined / sealed well.
4. What is on the bottom? Is there strips of rubber or something else so it isn't sitting flat on the bottom? here's a pic of the bottom of a tank I put in to make sure there was air flow under, I cut up a cheap 1/2" thick plastic cutting board and 5200 the squares to the bottom of the tank
https://photos.app.goo.gl/jnN8UUnbiNEMzbrM7