MKI PURCHASE

I recently purchased a MK I (SN 17-25542, 1982 according to Ruger's SN list) from a local Pawn Shop, 98% or so, no box, they did include a soft case, $250.00 When I got home I noticed they put
"PISTOL, RUGER, 22/45 MKIII 22LR SEMI-AUTOMATIC" on the receipt. This is no big deal to me, thought it odd that the Pawn Shop didn't know what they were selling, and I didn't look at the receipt.
On the Fire Arms application they put MKI. Has anyone had this happen? I know the price is pretty well irrelevant, I wanted the gun.

I would think as long as they got the serial number right you will be fine.

The SN is correct, I called the Pawn shop, and they said it was no big deal. Just sort of sloppy
book work to me. Thank's