It would appear that way but who knows how many of these things were made and for what. There's the shot of the hilt being shot up after it launches from Artoo and then another insert shot of it falling back down before the shot of Luke catching it; they could (very probably) be the resin ANH casts, as well.
A member on here, who might be banned now, was on set for that shoot. he said they had many copies, at least 7, and they had a box on them. Considering the close-up with R2, I think those were ANH era casts. Still baffled at the V2 upper decorations on that one on his belt.