Tkalec AG used to send me catalogues/ had wonderfull Ancient coin auctions featuring highest quality coins. I won quite a few from them. Then they went MIA, seems they are back now
I received a few e-mails recently from Tkalec, but it has been several years since I bought from him. Back then he had an interesting mix of high end coins and some of his he was moving. Several of first denarii I bought were some he cleaned and sold at modest prices.