Note that Wallis & Wallis have a 'four pin' 'A' Series Webley Premier in their 7th January Auction plus a further selection of other air pistols and air rifles.
Unfortunately, there appears to be some pitting to the side which spoils the appearance of the trade name.
Still one of the rarer variants of the Premier though.
http://www.the-saleroom.com/en-gb/aucti ... hitem=true" onclick="window.open(this.href);return false;
Regards
Brian