This Label was only put on in the 80s but for me the later bottle is the best example of these bottles having the shorter body and in comparison exteremly long straight neck, better than all the earlier bottles ive seen. You are correct of course about the pontil mark on the bottles but the other glass produced in the 80s had the bases ground and polished.
I suppose as a collector I should be looking for a Seaward design in a 37cm size as the smaller bottles sold less. But for skill and aesthetically pleasing to me I like the 80s bottle on ebay, what to do? lol