It means sealing again, reseeding or overseating. It means sealing twice, placing one seal on top of another, re-stamping, making sure something is well closed or covered.
RESEEDING 1 . action of reseoting a coin by changing its value. The year 1603 Philip III ordered to reseal the copper coin, fixing the value of 4 maravedíes to the piece that until then had been worth 2 and from 8 to that of 4, being forbidden the circulation of the unmarked 2. waterproofing work on a preliminary seal 2 . Past participle of the verb RESELLAR . 3 . Silver coin that circulated in Spain since 1812.
Reseal: Coined in Spain in the year 1812 silver coin.