I'm new to the forum but I've always browsed Numista for more information on my collection!
I've just bought two new coins, the first really caught my eye because it looked so strange, but I've been having trouble finding out more about it. From what I've been able to find out (by using Google translate and some Google searches) is that it's commemorating 25 years of service for a Polish company called 'Kieleckiego Przedsiebiorstwa Budownictwa Miejskiego' or KPBM (their logo is the gear, pyramid and lightning bolt on the coin) but I can't find a company website or anymore information about the company, other than it seemed to be an urban construction company with some hints showing that it's now defunct. It's quite big - it's 7.7 centimetres wide and about 5 millimetres thick and made of aluminium with a flat edge.
I did find a picture of a similar medallion here: http://medal.com.pl/2013/05/23/25-lat-w-sluzbie-ziemi-kieleckiej-medal-etui/ although mine lacks the date on that one, and the leather-style holster. I also found what looks like another similar medallion here on an old auction listing: http://archiwumallegro.pl/25_lat_w_sluzbie_ziemi_kieleckiej-1050186107.html
Here's a scan of both sides:

I know that it's not worth anything, but it'd be great to find out some more about this strange coin if anyone could help out!
The next is a very, very worn 1874 one penny, but what caught my eye was the engraving on it. Here's a scan of both sides:

Again, I know that it's probably not worth much, but does it have any particular value, other than just a curiosity? This has also been the second engraved coin I've came across (I have a Ulster Volunteer Force stamped two-shilling coin), the oldest and what looks like the most professionally engraved too. I've heard of American hobo quarters, but is this style of engraving on coins from his era at all common? Also, does the date of 'Easter 1905' have any special meaning? I do have the feeling that it might have been an apprentice engravers practise piece though! :P
Thank you very much for your time!