Very Very Old & Unique Glass Bottle

This bottle is not polished or anything. Its main purpose was to hold fluid and not that much on its looks on small detail. This is very old glass as you can see all of its inclutions that are noy glass and for the neck to be made they had to stretch it and you can see its stretch marks. There are even bubbles in the glass which shows quite an old time ago this was made. The main body of it was in some kind of mould and around the top of the neck of the bottle is a strip of molten glass that was wrapped around it to form the bottles top lips / rims. There is the number 4 stamped on the bottom of this old bottle. This glass has a green colour to it. So most of this bottle is hand made and lots of time was actually used up in the making of each bottle..... No machines then i guess.