Hi,
Actually the two bows you mentioned are different from each other. One has 6/1 and the other 50/50 durability.
For a long time no
Red Bow Base parts have been sold at Fair, so it is not possible to get the 6/1 one. The 50/50 one is a bow that was released later and can be obtained from the Luck Glow event and in my opinion is very valuable.
Therefore, I would like to say that these two are different from each other and it is not possible to get the old version unless you have the
Red Bow Base. I don't think it would be right for both of them to have the same stats at this stage.