Upon enlarging your photo, it appears to me to be a metal stamping tool #1 that was on a slight angle when someone PM struck it, so PMD for sure, IMO.
That is struck with a #1 Stamp punch from a normal industrial kit you can buy from Grainger, MSC, McMaster Carr. You can see the little hook at the top of the 1
PMD Polarization Mode Dispersion PMD Palmdale (Amtrak station code; Palmdale, CA) PMD Paramedic PMD Project Management in Development (certification) PMD Preferred Marketing Developer (social media) PMD Physical Medium Dependent PMD Parrish Making Dollars (rap artist) PMD Pokémon Mystery Dungeon PMD Passive Matrix Display PMD Portable Media Device PMD Product Model Data PMD Performance Metrics Domain PMD Power Management and Debug PMD Power Mobility Device PMD Partner Marketing Day PMD Portable Mini Disc PMD Power Management Display PMD Pelizaeus-Merzbacher Disease PMD Post Mint Damage (coins) PMD Physical Layer, Medium Dependent PMD Post Musical Depression (theater) PMD Pale Morning Dun (Fly Fishing) PMD Psychotic Major Depression PMD Power Mobility Device (disability aid) PMD Possible Military Dimension (Iran nuclear program) PMD Portfolio Management Data PMD Pakistan Meteorological Department PMD PM Dawn (band) PMD Pays Moins Developpes (French: Less Developed Countries) PMD Program Management Directive PMD Preventive Medicine Department (various organizations) PMD Partial Match Domain (search engine optimization) PMD Protein Mutant Database PMD Promoted to Main Draw (badminton) PMD People Making a Difference (Boston, MA) PMD Pontiac Motor Division PMD Pre-Metal Dielectric PMD Purple Monkey Dishwasher (gaming) PMD Private Medical Doctor PMD Primary Medical Doctor PMD Program Management Division PMD Portable Mission Display (US Air Force) PMD Predictive Multiple Description (video coding) PMD Personal Media Device PMD Preventive Maintenance Daily PMD Potomac, Maryland PMD Palmdale, CA, USA - Air Force 42 (Airport Code) PMD Propellant Management Devices PMD Polymeric Membrane Dressing (wound management) PMD Plastiek, Metaal en Drankkartons (Dutch: plastic, metal and beverage boxes) PMD Portable Maintenance Device PMD Preferred Medical Doctor PMD Post Mortem Dump PMD Phi Mu Delta (fraternity) PMD Probability of Missed Detection PMD Program Management Document(ation) PMD PostMaster Daemon PMD Project Medical Director (EMS) PMD Projectile/Mortar Disassembly PMD Power Management Device (semiconductors) PMD Post Micturition Dribble (urology) PMD Professional Masters Degree PMD Pulmonary agenesis, Microphthalmia, and Diaphragmatic defect PMD Periodic Mesophorous Dendrisillicus PMD Physical Memory Dump PMD Projected Map Display PMD Perfect Mendelsohn Design PMD Poly-Metal Dielectric PMD Parrish - Microphone Doctor (rap artist) PMD Pre-Metal Deposition PMD Performance Management Document PMD Pretty Mary Dies (band) PMD Propulsion Management Device PMD Pneumatic Mortar Device PMD Phase Modulation-Demodulation PMD Public Management Department PMD Adobe PageMaker 7.0 document (file extension) PMD Partially-Matched Detector PMD Provisional Marketing Director PMD Pre-Menstrual Dysphoria PMD Private Messaging Domain PMD Puissance Maximale Disponible (French: Maximum Power Available) PMD Prescribed Minimum Distance PMD Program Module Dictionary
When referring to a coin, PMD is listed in your list. Please refer to that if you need to understand more about PMD meaning in relation to a coin and this coin is PMD.