Send the following on WhatsApp
Continue to ChatAustria 1908 50h Red Postage Due ("Porto") Stamp (SG D219C, M/M) https://www.grahamlandstamps.co.uk/shop/stamps/stamps-by-country/austria-stamps-by-country/austria-1908-50h-red-postage-due-porto-stamp-sg-d219c-m-m/