Personally, I think you should use the weapon model that you like. 
The key thing is to have a narrative explanation for it and have it not actually be the relic (the only exception I personally know of is the Stardust Rod, because Shatotto apparently made quite a few of those). A replica of the Curtana, a sword forged by your father that just happens to look like it, an Allagan relic you found in your adventuring that coincidentally appears similar to it in some cases -- all of those are viable approaches to it, IMO.
The key thing is to have a narrative explanation for it and have it not actually be the relic (the only exception I personally know of is the Stardust Rod, because Shatotto apparently made quite a few of those). A replica of the Curtana, a sword forged by your father that just happens to look like it, an Allagan relic you found in your adventuring that coincidentally appears similar to it in some cases -- all of those are viable approaches to it, IMO.
The Freelance Wizard
Quality RP at low, low prices!
((about me | about L'yhta Mahre | L'yhta's desk | about Mysterium, the Ivory Tower: a heavy RP society of mages))
Quality RP at low, low prices!
((about me | about L'yhta Mahre | L'yhta's desk | about Mysterium, the Ivory Tower: a heavy RP society of mages))
