Russia 1856 Dob102307

Russia stampless folded letter to France. Unpaid category 1. 'St. PETERSBOURG 1856 III 31' lozenge shape cancel, manuscript '11' decimes rate, boxed 'Aus Russland' (T.P.O.) transit, red 'PRUSSE/3/VALENCIENNES 21 AVRIL 56', Paris and Paris to Bordeaux transits, arrival backstamp Bordeaux.
Details:
French rates of July 1 1853:

Under 7.5 grams - 1.10 fr.
7.5 to 15 grams - 1.40 fr
15 to 22.5 grams - 2.40 fr.
March 31 (Julian) 1856 unpaid letter posted at St. Petersburg. Sender wrote lower corner left 'Porto', this is not restated later by handstamp. '1856 - St. PETERSBOURG - III 31' postmark applied. In same handwriting '110' lower corner right backside, expressing the 110 decimes (1.10 fr.) rate.
Dobin: 1.02 type 3.07. Transit postmark, used 1854-1859, Rarity 4.[1]
Red 'Aus Russland' postmark applied. Used as a German entry/transit mark abroad the Coeln-Verviers T.P.O.
White: type CV5, 39x10mm.
April 21 (Gregorian). Red 'PRUSSE 3 VALENCIENNES 21 AVRIL 56' French entry mark, mail from Prussia (Prusse) entering France at the border town of Valenciennes. The small 3's show this mark was struck at Paris.
Noël: #1021[2]
Same day Paris transit backstamp. The under 7.5 grams was assessed, expressed as 11 decimes. 'PARIS (60) - 21 AVRIL 56' and manuscript '11' applied.
April 21. 'PARIS A BORDEAUX 10 D - 21 Avril 56' applied. Paris to Bordeaux T.P.O. transit backstamp, day train (octagonal center).
April 22. Bordeaux arrival backstamp. 'BORDEAUX (32) - 22 AVRIL 56' applied.