He, who is in Fort Lauderdale, Florida, has seemed fair and reasonable in my communications and dealings as well as in my reviews of his listed material. He has a brick and mortar store and is an APS Dealer Member. The most expensive thing he has sold recently on eBay
is a Philippines E2a (US E-6 with overprint). I have owned several over the years. That is not a stamp a dealers gets to sell because it came in a junk collection or junk lot nor does it just fall in your lap. Likewise the market for it is a narrow group of specialists or Philippines collectors. Just one sheet was made. So a dealer would not buy it just "on spec" hoping to have a buyer show up in their store.
If you go here: https://www.geocities.ws/stamplink/...lr/us/fl.htm
and do a control-f search on his eBay
name (no spaces) it will show up as part of his email and take you to all his information. (Don't use the search box at the top of the page as it will not work for just part of an email).
Now if you were to get that item and pay to get a certificate, then you would have your reference copy. Once you have a reference copy, you will see you really don't need a cert on everyone because you will then understand what the Blue Papers look like. Likewise if you clearly see a color difference with the purchase, you may not need to send it for a certificate as you now see the difference.
One other observation is the little difference in Scott price between the used 357 ($160) and on postcard price ($185) while on cover takes a jump($260).