Ebbets Field -- Seating Diagram
 

I have a chance to pick up a cool looking upper and lower level (two sided) seating diagram for Ebbets Field dated 1948 and signed J.H.V. -- looks almost like a drafting blue print of some sort. Does anyone here have knowledge on this type of piece?

Here is one that sold at Goldins in 2016, does it look similar to this?

https://goldinauctions.com/mobile/lo...eating_diagram

Yes, except it is signed J.H.V. and dated 1948 rather than 1952?