HI,
I have a picture postcard sent from the US to Amsterdam in 1909. In addition to the US machine cancel, an International machine, I believe, and a Dutch manual CDS receiver there are three other markings on the cover.
One is "A 52" inside an oval, second is a "L 31" and the third is a "3" inside a circle. All handstamps. I am presuming these are all of Dutch origin.
If any of you would understand what purpose these marks served, I'd appreciate some help.
thanks and all best,
Larry
