These are/were stock Harley option bags and are first seen on the 1949 FL Hydra Glide. The bag pattern remained the same but the stud and decorative patterns became more elaborate. These bags appear to be from between 1949 - 1952. The bags were made for Harley by Elgin and were sold on the "pleasure" version of the Hydra Glide. The Hydra Glide was sold by dealers as four versions. Pleasure, Police, Commercial,Trike (Three-Wheeler). I also see some of these bags on the '49 EL Panhead. I have looked earlier but so far the earliest they appear is 1949. I don't see any as stock options after 1952. I know they make repro's and aftermarket, these look in awfully good shape to be 67 to 69 years old.