A little further up from <a href="//commons.wikimedia.org/wiki/File:Post_box_on_Seaview_Road,_Wallasey.jpg" title="File:Post box on Seaview Road, Wallasey.jpg">CH45 430</a>, this metered mail (Franked Mail only) post box is CH45 4300.
<a href="//commons.wikimedia.org/wiki/User:Rodhullandemu" title="User:Rodhullandemu">Rodhullandemu</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>