Gecado branded Diana 25 with Hy-score Medallion too

[SpringerGuy]

Does anyone recall the year or years when the Diana started stamping their airguns (AGs) with the Hy-score (HS) brand. 

I bought an Hy-score 801 (Diana 25) stamped with Gecado brand and it has Hy-score medallion too.  There is a Beeman collection tag on the rifle, I just won the auctions so no pictures to post yet. 

I never seen a air rifle or pistol that wore had the Hy-score (HS) medallion in the stock but the airgun is missing Hy-score model number always stamped on the compression tube.  I am both young and inexperienced so hopefully someone could tell me about if they are rare/uncommon and production year(s). 

[Garvin]

Randy see the list at my gallery: Diana/Resources/Lists of Models/Dianas 1892 to present.

Sorry, the system won't let me post a hyperlink...