John 20:27 Then saith he to Thomas, Reach hither thy finger, and behold my hands; and reach hither thy hand, and thrust it into my side: and be not faithless, but believing.
In the above verse, we clearly see Jesus telling Thomas to behold His hands and to thrust his finger into His side.
It is quite clear that Jesus had the scars of the crucifixion a week after His resurrection.
When did He lose those scars, Tom? The Bible does not say He lost them. As a matter of fact, later on we read:
Acts 1:9-11 And when he had spoken these things, while they beheld, he was taken up; and a cloud received him out of their sight. And while they looked stedfastly toward heaven as he went up, behold, two men stood by them in white apparel; Which also said, Ye men of Galilee, why stand ye gazing up into heaven? this same Jesus, which is taken up from you into heaven, shall so come in like manner as ye have seen him go into heaven.
This same Jesus shall come again in like manner.
Now, it can be argued that the "in like manner" is referring to His return in the clouds as Paul preached to the Thessalonians would happen, but it could also mean that He would have the same battle scars He received at His trial and crucifixion.
I believe He will have His scars as He is "this same Jesus".