The problem with wanting pressed glass made is that pressed glass is used for large runs of manufacturing in large glassmaking facilities.
A mould needs to be made from scratch and these are very expensive to produce. For a big company, with big runs, the cost is worth it.
For a very small run such as the one you are thinking of, the cost of making the mould might be prohibitive.
But as you have an example, a mould must already have been made at some point. Have you any idea who made the one you have?