Blocking values ​​in the Netherlands?

Are the postage stamps of f 2,50, f 5, and f 10 issued in May 1946 to be considered, as they are called in philatelic circles, harmful issues? There is quite a bit of confusion regarding this! Therefore, it seemed appropriate to reiterate the regulations that were announced at the time. Service Order No. H.260bis of 21 November 1945: Import and export of postage stamps. 1. Pursuant to the “Foreign Exchange Decree 1945”, the import and export of postage stamps are prohibited other than by virtue of a license. 2. Presenters of consignments of which there is a well-founded suspicion that they contain postage stamps must be informed of the provision referred to under 1, with the notification that licenses in this regard are provisionally issued exclusively by the NV Nederlandsche Bank in Amsterdam. 3. The directors/independent branch managers are requested to inform the station managers and postal agents as far as necessary. Service Order No. H.357 of 22 May 1946: Postage stamps of f 2,50, f 5 and f 10. 1. Three new denominations of the postage stamps bearing the likeness of HM the Queen “Koninkenburg type”, namely f 2,50 (red-brown), f 5 (green), and f 10 (purple), have been produced in the same design as the recently issued f 1 stamps. 2. An initial stock is being sent ex officio by the inspector. The directors/independent postmasters are to supply a quantity of this to the postal establishments in their district as needed, insofar as necessary. No distribution will take place to delivery personnel in rural areas or depot holders. 3. Sales may commence immediately. 4. The f 2,50, f 5, and f 10 stamps may not be given into the hands of the public uncancelled. In connection with this, the following is stipulated: a. Accounting for postage and duties. The stamps may be used for the discharge of postage and duties due in cases where accounting thereof by means of postage stamps is prescribed. Franking at the request of the public to an amount higher than that due is not permitted for shipments abroad, but is permitted for domestic shipments. The affixing of the stamps must be carried out by officials, who must immediately thereafter render the stamps unusable by means of the date stamp. b. Sale as referred to in Article 18 of the 3rd Supplement to the Postal Directory. Sale to the public may take place in cases where cancellation of stamps is permitted pursuant to the provisions of Article 18 of the 3rd Supplement to the Postal Directory. Arrangement for cancellation, in compliance with the provisions of the said article, must be made immediately after the sale. c. Collectors' counters. The stamps in question are not made available at the counters for sale to collectors and, consequently, cannot be requested by the public at the post office in The Hague. 5. The officials to whom the stamps in question have been issued for purposes as described in point 4 under a and b ought to keep records, in the manner deemed most expedient by the directors, showing for whose benefit, in what quantities (for each value separately), and for what purpose the stamps were used in each instance (point 4, letter a), or to whom and in what quantities (for each value separately) the sale took place (point 4, letter b). These records must be kept with the stamp registers. Service Order No. H.331bis of June 11, 1947: Postage stamps of f 2,50, f 5, and f 10. 1. Notwithstanding the provisions of paragraph 1 of point 3 of do. 1/1947 (page 10/11) (see do. H.357/1946), it is hereby announced that, effective from 1 July next, one uncancelled copy of each of the postage stamps of f 2,50, f 5, and f 10 may be sold to stamp collectors under the following conditions. 2. The distribution shall take place to collectors who are members of a stamp collectors' association affiliated with the Netherlands Federation of Stamp Collectors' Associations and upon submission of a completed form, which must be signed by the Secretary of the latter Federation and by the member for whom the stamps are intended. The submitted forms must bear an impression of the date stamp and be entered daily in the register referred to in paragraph 2 of point 3 of do. 1/1947 referred to counter list, with which list the forms for inspection must be kept. 3. With the revocation of the provisions of the card telegram of 28 May 1946, no. 6255 S, it is further determined that, as of 1 July next, uncancelled postage stamps of the said values ​​may also be sold to those who are in possession of an export permit issued by the Ned. Bank NV Deviezenkantoor in Amsterdam, up to the quantities specified in this export permit. The stamps supplied with these export permits of f 2,50, f 5, and f 10 must, immediately after sale, be placed by the buyer in the presence of the postal official into one or more letters intended for the address(es) specified in the export permit. The letters in question must, after inspection by the postal official, be sealed and handed over to the latter for further processing. The unique and the duplicate of the export permit must bear an impression of the date stamp. The unique stamp shall be returned to the person concerned; The duplicate must, notwithstanding the provisions of Do. 1/1947, point 53, paragraph 7, not be enclosed in the shipment, but must be entered by the postal official on the counter list (see the end of point 2) and kept with this list for inspection. 4. With the exception of the cases referred to under 2 and 3 above, uncancelled postage stamps of the said values ​​may henceforth not be sold to the public, and the provisions of point 3 of Do. 1/1947 remain in full force. From this, it can be concluded that making a single series of stamps available was entirely due to the urgent request of the board of the Dutch Federation of Stamp Collectors' Associations to accommodate those collectors. At that time, stamps fell under the Foreign Exchange Decree 1945, just like banknotes and other securities. The stamps in question were available at all postal counters in the Netherlands, but pursuant to a law, they were not freely for sale, though they could be used for sending mail items and parcels.