Hi Rudzy,
He would have had them cut over here, but used old blanks from the States.
In the case of yours, I would guess he found an acetate that had been cut on one side only, with a pop tune from what you've said, then had the Consruction cut on the blank side.
In fact this rings true with the one I had, as on one side they had attempted to cut the True Image track, but it comes to an abrupt stop half way through. This would be because the cutting needle broke, probably caused by the Shellac having hardened with age, most probably because the blank was a few years old. So they had to flip it & re cut it on the other side.
Ady.