[HECnet] P/OS diskette available

[cross-posted in simh group] Cleaning out the attic, I found an original Digital RX50K diskette marked "BL-V811A-BH , P/OS DISKETTE V1.5 , SYSTEM", dated 1983. It has been stored in relatively constant and moderate temperature for ~30 years by my estimate. I have no idea if it is still readable, but for shipping costs, it's yours. In the same pouch were two blank (?), unlabeled, newly looking Digital Formula One RX33K 2HD floppies. They may be included or shipped separately. Wilm (located in the Netherlands, so shipping costs may vary. And you must advise me on the safest way of shipping without putting the contents in danger)