Prussian Flags & Standards
The Cavalry Standards (cont'd)
Schleßisches Kürassiere Regiment Nr 1.
Formed from various regiments in 1808, the regiment inherited the standards of the old Wagenfeld Kürassier-Regiment Nr 4.
Alt: Purple with a white centre. The centre device was "... mit dem zur Sonne fliegende Adler..legende >>Nec soli cedit<<" or in other words the same as figure 1 except the legend on the ribband should be "NON SOLI CEDIT". The corner monograms are given as "F.W.R." with a silver background. The bandolier is given as black with gold edging while the staff is given as purple.
RWM: Also purple given as the colour of the field but, interestingly, qualified as "dark crimson" (ie in brackets after the description of purple) . Bandolier as Alt but a white staff.
Nash, Over, Wise: Not given, although the standard given for the earlier Gessler (sic) KR Nr4 in Wise is described as mauve with the centre illustrated in figure 1.
Rawkins: Purple field with silver/white centre device and backing to corner monograms. Gold embroidery and fringe, gold and green mixed wreaths around centre device. New type of centre as given in figure 2. No details of the baldric or staff are given.
Redlin, Riehn:As Rawkins but with the older type of centre illustrated in figure 1, which is the illustration of this standard from Redlin's book, and white staff.

Figure 1
Ostpreußisches Kürassiere Regiment Nr 2.
Formed from the von Zeiten Dragoner-Regiment Nr 6 ( 1st battalion) and the depot squadrons of DR Nr 9 and Nr 10. Also carried by DR Nr 2.
Alt: Red corner wedges, helllila (violet?) field and white centre (Note- in the table describing the standarten of 1806 the centre is given as red). The centre device is as described for KR Nr 1. The staff is blue with gold nails and staff-head. Bandolier blue with gold edging. Note that there is no mention of the standarte being of the swallow-tailed pattern.
RWM: Dark blue with poppy-red corner wedges, silver centre and gold embroidery. FWR monograms. Mention is made of the standards captured at Kray and the fact that they appear to have gold corner flames rather than red wedges. Cornflower blue bandolier with gold embroidery. Pale blue staff.
Nash, Over, Wise: A Regiments-standarte as described above except the field is given as pale blue, the flag is a guidon type and the centre is the newer type shown in figure 4.
Rawkins: As Nash but the field is described as sky blue.
Redlin: As Alt but with the field described as "dunkelblau" or dark blue.
Riehn: As Alt but with a golden corner flames and a dark blue field.

Figure 2
As to the question of the standards captured at Kray, and (formerly?) displayed in St Petersberg, I only have the coloured sketch in Riehn as an illustration of the pattern. My thoughts on why there is such a discrepancy are given at the end of the descriptions.
I must thank Dallas Gavan and Oliver Schmidt for the following notes taken on KR Nr 2:
"Orlop, [Max]; Geschichte des Kürassier-Regiments Graf Wrangel (Ostpreußisches) Nr. 3 von 1717 bis 1892. Berlin, 1892.
[VI, 547, 169* pages]
There in the appendix it is stated on page 3* f., that the regimental standard, still carried in 1892, had been of the former dragoon-pattern with wedges, given to the Dragoner-Regiment Nr 6 (Auer in 1806).
According to Orlop, the field had been dark-blue and the wedges "mohnrot" (poppy-red). The middle was silver and the ribbon blue. It had been inscribed "Non soli cedit" for the Leib-standarte and "Pro Gloria et Patria" for the Regiments-Standarten. All embroidery was gold.
But by 1892 the cloth was destroyed and only the linen layer of "lichtblau" (light-blue) colour under the silk had survived, as well as a small part of "bläulich" (bluey) silk under the nails.
The staff in 1892 had a length of 255 cm, was painted "lichtblau" and "mit Silber gereifelt" (had silver ribbed grips).