Agreed - both locations of the mentioned losses of SN°2961 and SN°2962 are close by:
SN°2961 - Staraja Russa (N57.9921824 E31.3288195)
SN°2962 - Salutsche (= today Zaluchye N57.66563 E31.7612641)
... but the part clearly tells "Werk Nr. 2962"...
The aircraft was most likely based at Korov'ye-Selo (Source) to support the Demyansk airlift (Source).
I would strongly assume the 4 missing dog tags will be found at the crash site as the aircraft was reported to be a loss due to enemy fire.