Hi guys, just a quickie... does anyone know if "a cardboard coinholder with a window of polypropylene stretch foil" would be safe for coins http://cgi.ebay.co.uk/Self-Adhesive-coin-holders-x-25-for-coins-32-5mm-dia_W0QQitemZ170342634013QQcmdZViewItemQQptZUK_Coins_Supplies_RL?hash=item27a936521d&_trksid=p4634.c0.m14.l1262 the advert does say it's safe but i prefer t check with the experts! many thanks, chris