Hello & welcome!
More close-up pics are needed; especially showing the frame serial #, the barrel serial #, the toggle, any markings/graphics on the frame & receiver, etc...
Are all numbers matching? The majority of numbers will be the last two digits of the serial #...
How is the bluing? Any wear or rust? What about the straw coloring (if any)?
Pics of the magazine bottoms showing numbers, etc...
Same number on takedown tool (that cross-shaped thingy)???
How does the bore look? Field strip & inspect wear of parts...do they match?
Much more...Others will chime in shortly...