Piko N Gauge Model Train Carriage/Tanker x 2 in Great Condition

Piko Modelbahn Train Carriage/Container x 2
I know very little about these items apart from what I can detail on the carriage and box. I do know they are at least 30 years old and in good condition.
The models look like tankers one is slightly larger than the other that can be seen in the photo's.
The details on the end of one of the boxes are: Piko 5/4147-01 Made in GDR 5454660/5/24 7,50M. The other slightly smaller container doesn't have a sticker on the end of the box.
Selling lots of Piko carriages and locomotives check out my other items, also selling tracks and other model train items but listing gradually due to number of items.
Any questions please ask. Please note if posting Interntionally I will offer a couple of choices and confirm costs based off weight and value. I will want everything posted for to be signed for. Any questions please ask.