John Gill Commentary Numbers 7:14

"one golden spoon of ten [shekels], full of incense;" — Numbers 7:14 (ASV)

One spoon of ten [shekels] of gold, &c .
Its weight was according to the shekels, its matter of gold; it weighed four ounces, one drachm, and nine grains, and was worth about seven pounds and ten shillings of our money:

full of incense ;
this looks as if this spoon was designed for the golden altar of incense, which might be at this time also dedicated; but Jarchi understands it as for the altar of burnt offering, and observes, we never find incense belonging to a private person, nor to the outward altar (the altar of burnt offering), but this only, and which was temporary.