Help ID - Thailand Coins/Commemoratives

Update - My wife read these for me. The first is 50 year anniversary on the throne of Rama IX, dated 2539 = 1996. The second is commemorating the death of the King mother, March 10 2539 (also 1996). Neither has a denomination, which she thought was unusual. The plastic ziplock bags they are in are from the Thailand mint, so apparently they were officially issued commemoratives. I would guess they're fairly common among collectors in Thailand. No idea what the material is but the silver color peeking through the copper on the second coin seems to indicate they're not even solid copper, and also seems uncharacteristic of the Thailand mint which in my observation generally produces high quality coinage (given that these are mint-state).

Thanks @sap. You are correct - the second medal commemorates the cremation and the reverse I think depicts the royal crematorium, which according to wikipedia was constructed for her ceremony: "The Royal Cremation took place on 10 March 1996, for which an elaborately carved Royal Crematorium, or Phra Merumas, was built in the centre of Sanam Luang, symbolizing the mythical mountain abode of the Hindu gods. Crowds lined the street as the golden urn of rank was transported on the Royal Great Victory Carriage, or Phra Maha Pichai Ratcharot, in a solemn procession from the Grand Palace to the Royal Crematorium. This Royal Cremation Ceremony was one of the biggest events Thailand has witnessed in modern times, attended by thousands of people and watched on television nationwide."

I have several other individual 50th anniversary of reign coins as well as a 6-coin set. Why a non-denominational medal as well? These events are a big deal in Thailand, so clearly, the more the merrier. They even printed a 60 baht note for the 60th anniversary.

@thai-vic, I was hoping you would post here. Long live the king. I was fortunate to get a Rama V undated baht from my late father-in-law, not in the best condition but still a nice gift. I've decided to focus on Thai coins for a while, so PM me if you're interested in providing tips. I know I've seen some coin vendor stalls near Grand Palace but I'm not sure if they're reputable, or where else to go.

My father-in-law focused mainly on Buddha images (by the hundreds), but he also worked for a bank in Bangkok and had some coins. On my recent trip I photographed his collection, and now I'm really curious what's in those album pages locked in the back of that cabinet...