Signed Neiman Marcus 8.5" Crystal Vase Honeycomb Cut Glass Riedel (?) Large Tall

Description

This extremely high-end Neiman Marcus large, tall vase came from the estate collection of a serious glass collector (Tiffany, Quezal, Loetz, Stueben, etc.).  It is signed on the bottom as shown in the 5th and 6th photos.  Sadly, I can't make out the name.  It reads "{R or P xxxxx" for Neiman Marcus".
I believe it may be Riedel, but the signature looks nothing like their hallmark.  It may possibly be someone in the Riedel family acting as an independent designer.  (If you can identify, would you please let me know your thoughts?).  Regardless, Neiman Marcus specially commissioned this designer piece, which, as a Dallas resident, I know this was quite expense when purchased new.
The vase is extremely high quality. The exterior has facets in the shape of Hexagons of approximate 1.25" wide x 1.75" tall.  Clearly mouth-blown cut crystal with polished pontil -- not pressed glass.
Dimensions:
Height: 8.5"
Top diameter: 5.5"
Bottom diameter: 2.5"
No reportable condition issues.  No chips, flakes, breaks, repairs, flea bites, etc.
Vase is heavy -- weighs just under 5 pounds.
The item listed is being sold as is, as pictured and as described to the best of my knowledge.  If you have a question on an item prior to purchase, please ask. Remember, when buying vintage expect imperfections as these items have a history and have been in the possession of others. I try to list EVERY flaw which would be commented on something in an antique or vintage condition – this does not mean all imperfections resulting from normal wear & use require comment. My goal is to have no rude surprises upon receipt.
Please see "About me" for the contract  legalese.  Boring, I know, but essential. Always happy to pass through discounts on combined shipping.