A nice find. A rare find. One thing about the Ideal in regarding balance, many ideals are a bit butt heavy and have balance points about 1 1/2" or sometimes more behind the hinge pin. Probably due to the sling mechanism and guns with shorter barrels will obviously be more effected. All of the ideals I've owned gave been a bit ass heavy, I still shoot them ok though.
The Ideal is a striker fired gun driven by massive coil springs, double gun enthusiast will almost always notice that the trigger pulls will usually feel heavier than they actually are and have a very "spongy" feel to them. This bothers some people, others never notice. Even tuned triggers will have some sponginess and "creep" to them.
Ideal serial numbers can be misleading too. When the parts were made and stamped with their numbers doesn't necessarily indicate when the gun was assembled. Example: parts made in the late 30's, the gun assembled and completed in the 50's. Parts sat on the warehouse shelves until an order came in for a build. I got this information sometime ago from a gentleman I was corresponding with in France who was very knowledgable in all things Manufrance.
Enjoy your "new" gun!