At least you didn,t say it had a 4 inch barrel and get me hopping up and down.
I would check auction records to get an idea and check internet info to get an idea which are more collectible. there's info on build dates out there and if war era there were victory models.
Sorry no appraisal from me as i,m not unbiased! Seriously a reputable gun shop could give you a ball park idea, internet research will have given an idea of value you can compare to after shops valuation. and if a small fee were even required could give you concrete documentation of value.
You may know some insurance covers up to a certain amount before riders needed. likely its been checked and awaiting values.